diff --git a/build.zig b/build.zig index d1ecf1c3..e57315cb 100644 --- a/build.zig +++ b/build.zig @@ -342,6 +342,9 @@ fn linkCurl(b: *Build, mod: *Build.Module, is_tsan: bool) !void { const boringssl = buildBoringSsl(b, target, mod.optimize.?); for (boringssl) |lib| curl.root_module.linkLibrary(lib); + const libidn2 = buildLibidn2(b, target, mod.optimize.?, is_tsan); + curl.root_module.linkLibrary(libidn2); + switch (target.result.os.tag) { .macos => { // needed for proxying on mac @@ -496,6 +499,158 @@ fn buildNghttp2(b: *Build, target: Build.ResolvedTarget, optimize: std.builtin.O return lib; } +fn buildLibidn2( + b: *Build, + target: Build.ResolvedTarget, + optimize: std.builtin.OptimizeMode, + is_tsan: bool, +) *Build.Step.Compile { + const dep = b.dependency("libidn2", .{}); + + const os = target.result.os.tag; + const is_darwin = os.isDarwin(); + + const mod = b.createModule(.{ + .target = target, + .optimize = optimize, + .link_libc = true, + .sanitize_thread = is_tsan, + }); + + // libidn2's autoconf+gnulib stack expects a config.h with hundreds of + // HAVE_*/_GL_ATTRIBUTE_* defines — including ~800 lines of attribute- + // detection macros emitted from gnulib-common.m4 via AH_VERBATIM. We + // vendor a single autoconf-generated config.h rather than try to + // reproduce that machinery in the Zig build system. + mod.addIncludePath(b.path("vendor/libidn2")); + + // Substitute the gnulib-style .in.h templates. All @VAR@ in them are + // either DLL-visibility markers (empty for static POSIX) or + // HAVE_UNISTRING_WOE32DLL_H (0). + inline for (.{ "unitypes", "unistr", "uniconv", "unictype", "uninorm" }) |name| { + mod.addConfigHeader(renderUnistringHeader(b, dep, name)); + } + + mod.addIncludePath(dep.path("lib")); + mod.addIncludePath(dep.path("unistring")); + // gl/ holds gnulib helpers — only malloca and version-etc headers are + // referenced from the sources we compile; we don't need the full gl/ shim + // layer (system header replacements). + mod.addIncludePath(dep.path("gl")); + + const lib = b.addLibrary(.{ .name = "idn2", .root_module = mod }); + lib.installHeader(dep.path("lib/idn2.h"), "idn2.h"); + + if (is_darwin) { + // unistring's striconveh.c calls real iconv_*, which on macOS lives + // in libiconv (separate from libSystem). On glibc Linux iconv is in + // libc itself; on musl it would also need a separate -liconv. + mod.linkSystemLibrary("iconv", .{}); + } + + lib.addCSourceFiles(.{ + .root = dep.path("lib"), + .flags = &.{ "-DHAVE_CONFIG_H", "-DIDN2_STATIC" }, + .files = &.{ + "bidi.c", "context.c", "data.c", "decode.c", + "error.c", "free.c", "idna.c", "lookup.c", + "punycode.c", "register.c", "tables.c", "tr46map.c", + "version.c", + }, + }); + lib.addCSourceFiles(.{ + .root = dep.path("gl"), + .flags = &.{"-DHAVE_CONFIG_H"}, + // malloca.c provides striconveha's stack-or-heap allocator; strverscmp + // is a glibc extension absent on macOS that lib/version.c needs. + .files = &.{ "malloca.c", "strverscmp.c" }, + }); + lib.addCSourceFiles(.{ + .root = dep.path("unistring"), + .flags = &.{"-DHAVE_CONFIG_H"}, + .files = &.{ + "c-ctype.c", "c-strcasecmp.c", "c-strncasecmp.c", + "free.c", "iconv.c", "iconv_close.c", + "iconv_open.c", "localcharset.c", "stdlib.c", + "striconveh.c", "striconveha.c", "unistd.c", + "uniconv/u8-conv-from-enc.c", "uniconv/u8-strconv-from-enc.c", "uniconv/u8-strconv-from-locale.c", + "uniconv/u8-strconv-to-enc.c", "uniconv/u8-strconv-to-locale.c", "unictype/bidi_of.c", + "unictype/categ_M.c", "unictype/categ_none.c", "unictype/categ_of.c", + "unictype/categ_test.c", "unictype/combiningclass.c", "unictype/joiningtype_of.c", + "unictype/scripts.c", "uninorm/canonical-decomposition.c", "uninorm/composition.c", + "uninorm/decompose-internal.c", "uninorm/decomposition-table.c", "uninorm/nfc.c", + "uninorm/nfd.c", "uninorm/u32-normalize.c", "unistr/u32-cmp.c", + "unistr/u32-cpy-alloc.c", "unistr/u32-cpy.c", "unistr/u32-mbtouc-unsafe.c", + "unistr/u32-strlen.c", "unistr/u32-to-u8.c", "unistr/u32-uctomb.c", + "unistr/u8-check.c", "unistr/u8-mblen.c", "unistr/u8-mbtouc.c", + "unistr/u8-mbtouc-aux.c", "unistr/u8-mbtouc-unsafe.c", "unistr/u8-mbtouc-unsafe-aux.c", + "unistr/u8-mbtoucr.c", "unistr/u8-prev.c", "unistr/u8-strlen.c", + "unistr/u8-to-u32.c", "unistr/u8-uctomb.c", "unistr/u8-uctomb-aux.c", + }, + }); + + return lib; +} + +/// Process one of unistring's `.in.h` template headers into a real `.h`. +/// All `@VAR@` substitutions in these headers are either DLL-visibility markers +/// (empty for static POSIX builds) or `HAVE_UNISTRING_WOE32DLL_H` (0). +fn renderUnistringHeader(b: *Build, dep: *Build.Dependency, name: []const u8) *Build.Step.ConfigHeader { + const in_rel = b.fmt("unistring/{s}.in.h", .{name}); + const out_name = b.fmt("{s}.h", .{name}); + const lazy = dep.path(in_rel); + const path = lazy.getPath3(b, null); + + const file = path.root_dir.handle.openFile(path.sub_path, .{}) catch |e| { + std.debug.panic("openFile {s}: {s}", .{ path.sub_path, @errorName(e) }); + }; + defer file.close(); + const contents = file.readToEndAlloc(b.allocator, 4 << 20) catch @panic("OOM"); + + const ch = b.addConfigHeader(.{ + .include_path = out_name, + .style = .{ .autoconf_at = lazy }, + }, .{}); + + var seen = std.StringHashMap(void).init(b.allocator); + var i: usize = 0; + while (std.mem.indexOfScalarPos(u8, contents, i, '@')) |s| { + const a = s + 1; + const e = std.mem.indexOfScalarPos(u8, contents, a, '@') orelse break; + const var_name = contents[a..e]; + if (!isAtConfigName(var_name)) { + // Stray '@' (e.g. an email address in a comment); advance past it + // alone so we don't mis-pair with a later '@'. + i = s + 1; + continue; + } + const owned = b.allocator.dupe(u8, var_name) catch @panic("OOM"); + const gop = seen.getOrPut(owned) catch @panic("OOM"); + if (!gop.found_existing) { + if (std.mem.eql(u8, var_name, "HAVE_UNISTRING_WOE32DLL_H")) { + ch.addValue(owned, c_int, 0); + } else { + ch.addValue(owned, []const u8, ""); + } + } + i = e + 1; + } + return ch; +} + +fn isAtConfigName(s: []const u8) bool { + if (s.len == 0) return false; + for (s, 0..) |c, idx| { + const ok = switch (c) { + 'A'...'Z', '_' => true, + '0'...'9' => idx > 0, + else => false, + }; + if (!ok) return false; + } + return true; +} + fn buildCurl( b: *Build, target: Build.ResolvedTarget, @@ -572,6 +727,11 @@ fn buildCurl( ._FILE_OFFSET_BITS = 64, .USE_IPV6 = true, + // Route IDN hostnames through libidn2 (vendored, see buildLibidn2). + // Without this, libcurl ships UTF-8 host bytes to SNI/cert validation + // and breaks for non-ASCII hostnames like räksmörgås.se. + .HAVE_LIBIDN2 = true, + .HAVE_IDN2_H = true, .CURL_OS = switch (os) { .linux => if (is_android) "\"android\"" else "\"linux\"", else => std.fmt.allocPrint(b.allocator, "\"{s}\"", .{@tagName(os)}) catch @panic("OOM"), diff --git a/build.zig.zon b/build.zig.zon index ce289daa..54c4ed95 100644 --- a/build.zig.zon +++ b/build.zig.zon @@ -34,6 +34,10 @@ .url = "https://github.com/allyourcodebase/sqlite3/archive/8f840560eae88ab66668c6827c64ffbd0d74ef37.tar.gz", .hash = "sqlite3-3.51.0-DMxLWssOAABZ8cAvU_LfBIbp0kZjm824PU8sSLXpEDdr", }, + .libidn2 = .{ + .url = "https://ftp.gnu.org/gnu/libidn/libidn2-2.3.8.tar.gz", + .hash = "N-V-__8AABGOuAC_dhAN07kfoP4dycCFi8Bka4O-tuhriNH8", + }, }, .paths = .{""}, } diff --git a/src/browser/URL.zig b/src/browser/URL.zig index d55a23ac..c3bfbde7 100644 --- a/src/browser/URL.zig +++ b/src/browser/URL.zig @@ -17,6 +17,8 @@ // along with this program. If not, see . const std = @import("std"); +const idna = @import("../sys/idna.zig"); + const Allocator = std.mem.Allocator; pub const ResolveOpts = struct { @@ -190,11 +192,35 @@ pub fn resolve(allocator: Allocator, base: [:0]const u8, source_path: anytype, o } fn processResolved(allocator: Allocator, url: [:0]const u8, opts: ResolveOpts) ![:0]const u8 { - const encoding = opts.encoding orelse return url; + const encoding = opts.encoding orelse return ensureHostAscii(allocator, url); return ensureEncoded(allocator, url, encoding); } -pub fn ensureEncoded(allocator: Allocator, url: [:0]const u8, encoding: []const u8) ![:0]const u8 { +/// IDNA-only pass: converts a non-ASCII host (`räksmörgås.se`) to its +/// punycode form (`xn--rksmrgs-5wao1o.se`) and leaves everything else alone. +fn ensureHostAscii(allocator: Allocator, url: [:0]const u8) ![:0]const u8 { + const hostname = getHostname(url); + if (hostname.len == 0 or !idna.needsAscii(hostname)) { + return url; + } + + const ascii = try idna.toAscii(allocator, hostname); + + // hostname is a slice of url, so its start offset is just pointer arithmetic. + const start = @intFromPtr(hostname.ptr) - @intFromPtr(url.ptr); + const end = start + hostname.len; + var buf = try std.ArrayList(u8).initCapacity(allocator, url.len - hostname.len + ascii.len + 1); + buf.appendSliceAssumeCapacity(url[0..start]); + buf.appendSliceAssumeCapacity(ascii); + buf.appendSliceAssumeCapacity(url[end..]); + buf.appendAssumeCapacity(0); + return buf.items[0 .. buf.items.len - 1 :0]; +} + +pub fn ensureEncoded(allocator: Allocator, url_in: [:0]const u8, encoding: []const u8) ![:0]const u8 { + // Resolve any IDN host first; everything below operates on the ASCII form. + const url = try ensureHostAscii(allocator, url_in); + const scheme_end = std.mem.indexOf(u8, url, "://"); const authority_start = if (scheme_end) |end| end + 3 else 0; const path_start = std.mem.indexOfScalarPos(u8, url, authority_start, '/') orelse return url; diff --git a/src/browser/tests/url.html b/src/browser/tests/url.html index 3b1d2add..60f991ea 100644 --- a/src/browser/tests/url.html +++ b/src/browser/tests/url.html @@ -871,3 +871,52 @@ testing.expectEqual('', url.search); } + + diff --git a/src/browser/webapi/Node.zig b/src/browser/webapi/Node.zig index 1c69fae4..b1e40062 100644 --- a/src/browser/webapi/Node.zig +++ b/src/browser/webapi/Node.zig @@ -763,6 +763,7 @@ const CloneError = error{ NotImplemented, InvalidCharacterError, CloneError, + Idna, IFrameLoadError, TooManyContexts, LinkLoadError, diff --git a/src/sys/idna.zig b/src/sys/idna.zig new file mode 100644 index 00000000..368928e5 --- /dev/null +++ b/src/sys/idna.zig @@ -0,0 +1,76 @@ +// Copyright (C) 2023-2026 Lightpanda (Selecy SAS) +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as +// published by the Free Software Foundation, either version 3 of the +// License, or (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see . + +const std = @import("std"); + +const c = @cImport({ + @cInclude("idn2.h"); +}); + +const Allocator = std.mem.Allocator; +pub const Error = error{Idna} || Allocator.Error; + +/// True if `host` contains any non-ASCII byte and therefore needs IDNA +/// processing. Pure-ASCII hostnames are returned unchanged by `toAscii`, +/// so callers can use this as a fast path to skip the C call entirely. +pub fn needsAscii(host: []const u8) bool { + for (host) |byte| { + if (byte >= 0x80) { + return true; + } + } + return false; +} + +/// Convert a UTF-8 hostname to its ASCII (Punycode) form per UTS#46 +/// IDNA 2008 with non-transitional processing — the algorithm WHATWG URL +/// invokes as "domain to ASCII". Returns an allocator-owned slice. +pub fn toAscii(allocator: Allocator, host: []const u8) Error![]u8 { + const host_z = try allocator.dupeZ(u8, host); + defer allocator.free(host_z); + + var out_ptr: [*c]u8 = undefined; + const flags: c_int = c.IDN2_NFC_INPUT | c.IDN2_NONTRANSITIONAL; + const rc = c.idn2_to_ascii_8z(host_z.ptr, &out_ptr, flags); + if (rc != c.IDN2_OK) { + return error.Idna; + } + defer c.idn2_free(out_ptr); + + return try allocator.dupe(u8, std.mem.span(@as([*:0]const u8, @ptrCast(out_ptr)))); +} + +const testing = @import("../testing.zig"); + +test "idna: ASCII passthrough" { + try testing.expectEqual(false, needsAscii("example.com")); + const out = try toAscii(testing.allocator, "example.com"); + defer testing.allocator.free(out); + try testing.expectString("example.com", out); +} + +test "idna: non-ASCII to punycode" { + try testing.expectEqual(true, needsAscii("räksmörgås.se")); + const out = try toAscii(testing.allocator, "räksmörgås.se"); + defer testing.allocator.free(out); + try testing.expectString("xn--rksmrgs-5wao1o.se", out); +} + +test "idna: German sharp s with non-transitional processing" { + // UTS#46 non-transitional preserves ß rather than mapping to ss. + const out = try toAscii(testing.allocator, "faß.de"); + defer testing.allocator.free(out); + try testing.expectString("xn--fa-hia.de", out); +} diff --git a/vendor/libidn2/config.h b/vendor/libidn2/config.h new file mode 100644 index 00000000..5ff0d577 --- /dev/null +++ b/vendor/libidn2/config.h @@ -0,0 +1,1907 @@ +/* config.h. Generated from config.h.in by configure. */ +/* config.h.in. Generated from configure.ac by autoheader. */ + +/* Witness that has been included. */ +#define _GL_CONFIG_H_INCLUDED 1 + + +/* Define to the number of bits in type 'ptrdiff_t'. */ +/* #undef BITSIZEOF_PTRDIFF_T */ + +/* Define to the number of bits in type 'sig_atomic_t'. */ +/* #undef BITSIZEOF_SIG_ATOMIC_T */ + +/* Define to the number of bits in type 'size_t'. */ +/* #undef BITSIZEOF_SIZE_T */ + +/* Define to the number of bits in type 'wchar_t'. */ +/* #undef BITSIZEOF_WCHAR_T */ + +/* Define to the number of bits in type 'wint_t'. */ +/* #undef BITSIZEOF_WINT_T */ + +/* Define to 1 if using 'alloca.c'. */ +/* #undef C_ALLOCA */ + +/* Define to 1 if // is a file system root distinct from /. */ +/* #undef DOUBLE_SLASH_IS_DISTINCT_ROOT */ + +/* Define to 1 if translation of program messages to the user's native + language is requested. */ +/* #undef ENABLE_NLS */ + +/* Define this to 1 if F_DUPFD behavior does not match POSIX */ +/* #undef FCNTL_DUPFD_BUGGY */ + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module close shall be considered present. */ +#define GNULIB_CLOSE 1 + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module fscanf shall be considered present. */ +#define GNULIB_FSCANF 1 + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module fstat shall be considered present. */ +#define GNULIB_FSTAT 1 + +/* Define to the directory where to find the localizations of the translation + domain 'gnulib', as a C string. */ +#define GNULIB_LOCALEDIR "/usr/local/share/locale" + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module msvc-nothrow shall be considered present. */ +#define GNULIB_MSVC_NOTHROW 1 + +/* Disable VLA usage in gettext.h. */ +#define GNULIB_NO_VLA 1 + +/* Define to 1 if printf and friends should be labeled with attribute + "__gnu_printf__" instead of "__printf__" */ +/* #undef GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU */ + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module scanf shall be considered present. */ +#define GNULIB_SCANF 1 + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module stat shall be considered present. */ +#define GNULIB_STAT 1 + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module strerror shall be considered present. */ +#define GNULIB_STRERROR 1 + +/* Define to 1 when the gnulib module cloexec should be tested. */ +#define GNULIB_TEST_CLOEXEC 1 + +/* Define to 1 when the gnulib module close should be tested. */ +#define GNULIB_TEST_CLOSE 1 + +/* Define to 1 when the gnulib module dup2 should be tested. */ +#define GNULIB_TEST_DUP2 1 + +/* Define to 1 when the gnulib module fcntl should be tested. */ +#define GNULIB_TEST_FCNTL 1 + +/* Define to 1 when the gnulib module fgetc should be tested. */ +#define GNULIB_TEST_FGETC 1 + +/* Define to 1 when the gnulib module fgets should be tested. */ +#define GNULIB_TEST_FGETS 1 + +/* Define to 1 when the gnulib module fprintf should be tested. */ +#define GNULIB_TEST_FPRINTF 1 + +/* Define to 1 when the gnulib module fputc should be tested. */ +#define GNULIB_TEST_FPUTC 1 + +/* Define to 1 when the gnulib module fputs should be tested. */ +#define GNULIB_TEST_FPUTS 1 + +/* Define to 1 when the gnulib module fread should be tested. */ +#define GNULIB_TEST_FREAD 1 + +/* Define to 1 when the gnulib module free-posix should be tested. */ +#define GNULIB_TEST_FREE_POSIX 1 + +/* Define to 1 when the gnulib module fscanf should be tested. */ +#define GNULIB_TEST_FSCANF 1 + +/* Define to 1 when the gnulib module fstat should be tested. */ +#define GNULIB_TEST_FSTAT 1 + +/* Define to 1 when the gnulib module fwrite should be tested. */ +#define GNULIB_TEST_FWRITE 1 + +/* Define to 1 when the gnulib module getc should be tested. */ +#define GNULIB_TEST_GETC 1 + +/* Define to 1 when the gnulib module getchar should be tested. */ +#define GNULIB_TEST_GETCHAR 1 + +/* Define to 1 when the gnulib module getdelim should be tested. */ +#define GNULIB_TEST_GETDELIM 1 + +/* Define to 1 when the gnulib module getdtablesize should be tested. */ +#define GNULIB_TEST_GETDTABLESIZE 1 + +/* Define to 1 when the gnulib module getline should be tested. */ +#define GNULIB_TEST_GETLINE 1 + +/* Define to 1 when the gnulib module getopt-posix should be tested. */ +#define GNULIB_TEST_GETOPT_POSIX 1 + +/* Define to 1 when the gnulib module getprogname should be tested. */ +#define GNULIB_TEST_GETPROGNAME 1 + +/* Define to 1 when the gnulib module open should be tested. */ +#define GNULIB_TEST_OPEN 1 + +/* Define to 1 when the gnulib module printf should be tested. */ +#define GNULIB_TEST_PRINTF 1 + +/* Define to 1 when the gnulib module putc should be tested. */ +#define GNULIB_TEST_PUTC 1 + +/* Define to 1 when the gnulib module putchar should be tested. */ +#define GNULIB_TEST_PUTCHAR 1 + +/* Define to 1 when the gnulib module puts should be tested. */ +#define GNULIB_TEST_PUTS 1 + +/* Define to 1 when the gnulib module rawmemchr should be tested. */ +#define GNULIB_TEST_RAWMEMCHR 1 + +/* Define to 1 when the gnulib module scanf should be tested. */ +#define GNULIB_TEST_SCANF 1 + +/* Define to 1 when the gnulib module stat should be tested. */ +#define GNULIB_TEST_STAT 1 + +/* Define to 1 when the gnulib module strchrnul should be tested. */ +#define GNULIB_TEST_STRCHRNUL 1 + +/* Define to 1 when the gnulib module strerror should be tested. */ +#define GNULIB_TEST_STRERROR 1 + +/* Define to 1 when the gnulib module strverscmp should be tested. */ +#define GNULIB_TEST_STRVERSCMP 1 + +/* Define to 1 when the gnulib module uninorm/u32-normalize should be tested. + */ +#define GNULIB_TEST_UNINORM_U32_NORMALIZE 1 + +/* Define to 1 when the gnulib module vfprintf should be tested. */ +#define GNULIB_TEST_VFPRINTF 1 + +/* Define to 1 when the gnulib module vprintf should be tested. */ +#define GNULIB_TEST_VPRINTF 1 + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module unistr/u32-mbtouc-unsafe shall be considered + present. */ +#define GNULIB_UNISTR_U32_MBTOUC_UNSAFE 1 + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module unistr/u32-uctomb shall be considered present. */ +#define GNULIB_UNISTR_U32_UCTOMB 1 + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module unistr/u8-mbtouc shall be considered present. */ +#define GNULIB_UNISTR_U8_MBTOUC 1 + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module unistr/u8-mbtoucr shall be considered present. */ +#define GNULIB_UNISTR_U8_MBTOUCR 1 + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module unistr/u8-mbtouc-unsafe shall be considered + present. */ +#define GNULIB_UNISTR_U8_MBTOUC_UNSAFE 1 + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module unistr/u8-uctomb shall be considered present. */ +#define GNULIB_UNISTR_U8_UCTOMB 1 + +/* Define to 1 if you have 'alloca' after including , a header that + may be supplied by this distribution. */ +#define HAVE_ALLOCA 1 + +/* Define to 1 if works. */ +#define HAVE_ALLOCA_H 1 + +/* Define to 1 if you have the Mac OS X function CFLocaleCopyCurrent in the + CoreFoundation framework. */ +#define HAVE_CFLOCALECOPYCURRENT 1 + +/* Define to 1 if you have the Mac OS X function CFPreferencesCopyAppValue in + the CoreFoundation framework. */ +#define HAVE_CFPREFERENCESCOPYAPPVALUE 1 + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_CRTDEFS_H */ + +/* Define to 1 if bool, true and false work as per C2023. */ +/* #undef HAVE_C_BOOL */ + +/* Define to 1 if the static_assert keyword works. */ +/* #undef HAVE_C_STATIC_ASSERT */ + +/* Define to 1 if C supports variable-length arrays. */ +#define HAVE_C_VARARRAYS 1 + +/* Define if the GNU dcgettext() function is already present or preinstalled. + */ +/* #undef HAVE_DCGETTEXT */ + +/* Define to 1 if you have the declaration of `ecvt', and to 0 if you don't. + */ +#define HAVE_DECL_ECVT 1 + +/* Define to 1 if you have the declaration of `execvpe', and to 0 if you + don't. */ +#define HAVE_DECL_EXECVPE 0 + +/* Define to 1 if you have the declaration of `fcloseall', and to 0 if you + don't. */ +#define HAVE_DECL_FCLOSEALL 0 + +/* Define to 1 if you have the declaration of `fcvt', and to 0 if you don't. + */ +#define HAVE_DECL_FCVT 1 + +/* Define to 1 if you have the declaration of `gcvt', and to 0 if you don't. + */ +#define HAVE_DECL_GCVT 1 + +/* Define to 1 if you have the declaration of `getc_unlocked', and to 0 if you + don't. */ +#define HAVE_DECL_GETC_UNLOCKED 1 + +/* Define to 1 if you have the declaration of `getdelim', and to 0 if you + don't. */ +#define HAVE_DECL_GETDELIM 1 + +/* Define to 1 if you have the declaration of `getdtablesize', and to 0 if you + don't. */ +#define HAVE_DECL_GETDTABLESIZE 1 + +/* Define to 1 if you have the declaration of `getline', and to 0 if you + don't. */ +#define HAVE_DECL_GETLINE 1 + +/* Define to 1 if you have the declaration of `getw', and to 0 if you don't. + */ +#define HAVE_DECL_GETW 1 + +/* Define to 1 if you have the declaration of `program_invocation_name', and + to 0 if you don't. */ +#define HAVE_DECL_PROGRAM_INVOCATION_NAME 0 + +/* Define to 1 if you have the declaration of `program_invocation_short_name', + and to 0 if you don't. */ +#define HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME 0 + +/* Define to 1 if you have the declaration of `putw', and to 0 if you don't. + */ +#define HAVE_DECL_PUTW 1 + +/* Define to 1 if you have the declaration of `strerror_r', and to 0 if you + don't. */ +#define HAVE_DECL_STRERROR_R 1 + +/* Define to 1 if you have the declaration of `wcsdup', and to 0 if you don't. + */ +#define HAVE_DECL_WCSDUP 1 + +/* Define to 1 if you have the declaration of `__argv', and to 0 if you don't. + */ +/* #undef HAVE_DECL___ARGV */ + +/* Define to 1 if you have the header file. */ +#define HAVE_DLFCN_H 1 + +/* Define to 1 if you have the `error' function. */ +/* #undef HAVE_ERROR */ + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_ERROR_H */ + +/* Define to 1 if you have the `fcntl' function. */ +#define HAVE_FCNTL 1 + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_FEATURES_H */ + +/* Define to 1 if you have the `flockfile' function. */ +#define HAVE_FLOCKFILE 1 + +/* Define if the 'free' function is guaranteed to preserve errno. */ +/* #undef HAVE_FREE_POSIX */ + +/* Define to 1 if you have the `funlockfile' function. */ +#define HAVE_FUNLOCKFILE 1 + +/* Define to 1 if you have the `getdelim' function. */ +#define HAVE_GETDELIM 1 + +/* Define to 1 if you have the `getdtablesize' function. */ +#define HAVE_GETDTABLESIZE 1 + +/* Define to 1 if you have the `getexecname' function. */ +/* #undef HAVE_GETEXECNAME */ + +/* Define to 1 if you have the `getline' function. */ +#define HAVE_GETLINE 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_GETOPT_H 1 + +/* Define to 1 if you have the `getopt_long_only' function. */ +#define HAVE_GETOPT_LONG_ONLY 1 + +/* Define to 1 if you have the `getprogname' function. */ +#define HAVE_GETPROGNAME 1 + +/* Define if the GNU gettext() function is already present or preinstalled. */ +/* #undef HAVE_GETTEXT */ + +/* Define if you have the iconv() function and it works. */ +/* #undef HAVE_ICONV */ + +/* Define to 1 if you have the header file. */ +#define HAVE_ICONV_H 1 + +/* Define to 1 if the compiler supports one of the keywords 'inline', + '__inline__', '__inline' and effectively inlines functions marked as such. + */ +#define HAVE_INLINE 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_INTTYPES_H 1 + +/* Define if you have and nl_langinfo(CODESET). */ +#define HAVE_LANGINFO_CODESET 1 + +/* Define if you have the libunistring library. */ +/* #undef HAVE_LIBUNISTRING */ + +/* Define to 1 if you have the header file. */ +#define HAVE_LIMITS_H 1 + +/* Define to 1 if the system has the type 'long long int'. */ +#define HAVE_LONG_LONG_INT 1 + +/* Define to 1 if you have the `lstat' function. */ +#define HAVE_LSTAT 1 + +/* Define to 1 if malloc (0) returns nonnull. */ +#define HAVE_MALLOC_0_NONNULL 1 + +/* Define if malloc, realloc, and calloc set errno on allocation failure. */ +#define HAVE_MALLOC_POSIX 1 + +/* Define to 1 if malloc-like functions do not allocate objects larger than + PTRDIFF_MAX bytes. */ +#define HAVE_MALLOC_PTRDIFF 1 + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_MINIX_CONFIG_H */ + +/* Define to 1 on MSVC platforms that have the "invalid parameter handler" + concept. */ +/* #undef HAVE_MSVC_INVALID_PARAMETER_HANDLER */ + +/* Define to 1 if you have the `rawmemchr' function. */ +/* #undef HAVE_RAWMEMCHR */ + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_SDKDDKVER_H */ + +/* Define to 1 if you have the `setdtablesize' function. */ +/* #undef HAVE_SETDTABLESIZE */ + +/* Define to 1 if 'sig_atomic_t' is a signed integer type. */ +/* #undef HAVE_SIGNED_SIG_ATOMIC_T */ + +/* Define to 1 if 'wchar_t' is a signed integer type. */ +/* #undef HAVE_SIGNED_WCHAR_T */ + +/* Define to 1 if 'wint_t' is a signed integer type. */ +/* #undef HAVE_SIGNED_WINT_T */ + +/* Define to 1 if you have the header file. */ +#define HAVE_STDBOOL_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_STDCKDINT_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_STDINT_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_STDIO_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_STDLIB_H 1 + +/* Define to 1 if you have the `strchrnul' function. */ +#define HAVE_STRCHRNUL 1 + +/* Define if you have `strerror_r'. */ +#define HAVE_STRERROR_R 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_STRINGS_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_STRING_H 1 + +/* Define to 1 if `st_atimensec' is a member of `struct stat'. */ +/* #undef HAVE_STRUCT_STAT_ST_ATIMENSEC */ + +/* Define to 1 if `st_atimespec.tv_nsec' is a member of `struct stat'. */ +#define HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC 1 + +/* Define to 1 if `st_atim.st__tim.tv_nsec' is a member of `struct stat'. */ +/* #undef HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC */ + +/* Define to 1 if `st_atim.tv_nsec' is a member of `struct stat'. */ +/* #undef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC */ + +/* Define to 1 if `st_birthtimensec' is a member of `struct stat'. */ +/* #undef HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC */ + +/* Define to 1 if `st_birthtimespec.tv_nsec' is a member of `struct stat'. */ +#define HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC 1 + +/* Define to 1 if `st_birthtim.tv_nsec' is a member of `struct stat'. */ +/* #undef HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC */ + +/* Define to 1 if you have the `strverscmp' function. */ +/* #undef HAVE_STRVERSCMP */ + +/* Define to 1 if you have the `symlink' function. */ +#define HAVE_SYMLINK 1 + +/* The toolchain supports aliases and .symver. */ +/* #undef HAVE_SYMVER_ALIAS_SUPPORT */ + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_SYS_BITYPES_H */ + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_SYS_INTTYPES_H */ + +/* Define to 1 if you have the header file. */ +#define HAVE_SYS_PARAM_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_SYS_SOCKET_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_SYS_STAT_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_SYS_TIME_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_SYS_TYPES_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_UNISTD_H 1 + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_UNISTRING_WOE32DLL_H */ + +/* Define to 1 if the system has the type 'unsigned long long int'. */ +#define HAVE_UNSIGNED_LONG_LONG_INT 1 + +/* Define if you have a global __progname variable */ +/* #undef HAVE_VAR___PROGNAME */ + +/* Define to 1 or 0, depending whether the compiler supports simple visibility + declarations. */ +#define HAVE_VISIBILITY 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_WCHAR_H 1 + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_WINSOCK2_H */ + +/* Define if you have the 'wint_t' type. */ +#define HAVE_WINT_T 1 + +/* Define to 1 if O_NOATIME works. */ +#define HAVE_WORKING_O_NOATIME 1 + +/* Define to 1 if O_NOFOLLOW works. */ +#define HAVE_WORKING_O_NOFOLLOW 1 + +/* Define to 1 if you have the `_set_invalid_parameter_handler' function. */ +/* #undef HAVE__SET_INVALID_PARAMETER_HANDLER */ + +/* Define to 1 if ctype.h defines __header_inline. */ +#define HAVE___HEADER_INLINE 1 + +/* Please see the Gnulib manual for how to use these macros. + + Suppress extern inline with HP-UX cc, as it appears to be broken; see + . + + Suppress extern inline with Sun C in standards-conformance mode, as it + mishandles inline functions that call each other. E.g., for 'inline void f + (void) { } inline void g (void) { f (); }', c99 incorrectly complains + 'reference to static identifier "f" in extern inline function'. + This bug was observed with Oracle Developer Studio 12.6 + (Sun C 5.15 SunOS_sparc 2017/05/30). + + Suppress extern inline (with or without __attribute__ ((__gnu_inline__))) + on configurations that mistakenly use 'static inline' to implement + functions or macros in standard C headers like . For example, + if isdigit is mistakenly implemented via a static inline function, + a program containing an extern inline function that calls isdigit + may not work since the C standard prohibits extern inline functions + from calling static functions (ISO C 99 section 6.7.4.(3). + This bug is known to occur on: + + OS X 10.8 and earlier; see: + https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html + + DragonFly; see + http://muscles.dragonflybsd.org/bulk/clang-master-potential/20141111_102002/logs/ah-tty-0.3.12.log + + FreeBSD; see: + https://lists.gnu.org/r/bug-gnulib/2014-07/msg00104.html + + OS X 10.9 has a macro __header_inline indicating the bug is fixed for C and + for clang but remains for g++; see . + Assume DragonFly and FreeBSD will be similar. + + GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99 + inline semantics, unless -fgnu89-inline is used. It defines a macro + __GNUC_STDC_INLINE__ to indicate this situation or a macro + __GNUC_GNU_INLINE__ to indicate the opposite situation. + GCC 4.2 with -std=c99 or -std=gnu99 implements the GNU C inline + semantics but warns, unless -fgnu89-inline is used: + warning: C99 inline functions are not supported; using GNU89 + warning: to disable this warning use -fgnu89-inline or the gnu_inline function attribute + It defines a macro __GNUC_GNU_INLINE__ to indicate this situation. + */ +#if (((defined __APPLE__ && defined __MACH__) \ + || defined __DragonFly__ || defined __FreeBSD__) \ + && (defined HAVE___HEADER_INLINE \ + ? (defined __cplusplus && defined __GNUC_STDC_INLINE__ \ + && ! defined __clang__) \ + : ((! defined _DONT_USE_CTYPE_INLINE_ \ + && (defined __GNUC__ || defined __cplusplus)) \ + || (defined _FORTIFY_SOURCE && 0 < _FORTIFY_SOURCE \ + && defined __GNUC__ && ! defined __cplusplus)))) +# define _GL_EXTERN_INLINE_STDHEADER_BUG +#endif +#if ((__GNUC__ \ + ? (defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \ + && !defined __PCC__) \ + : (199901L <= __STDC_VERSION__ \ + && !defined __HP_cc \ + && !defined __PGI \ + && !(defined __SUNPRO_C && __STDC__))) \ + && !defined _GL_EXTERN_INLINE_STDHEADER_BUG) +# define _GL_INLINE inline +# define _GL_EXTERN_INLINE extern inline +# define _GL_EXTERN_INLINE_IN_USE +#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \ + && !defined __PCC__ \ + && !defined _GL_EXTERN_INLINE_STDHEADER_BUG) +# if defined __GNUC_GNU_INLINE__ && __GNUC_GNU_INLINE__ + /* __gnu_inline__ suppresses a GCC 4.2 diagnostic. */ +# define _GL_INLINE extern inline __attribute__ ((__gnu_inline__)) +# else +# define _GL_INLINE extern inline +# endif +# define _GL_EXTERN_INLINE extern +# define _GL_EXTERN_INLINE_IN_USE +#else +# define _GL_INLINE _GL_UNUSED static +# define _GL_EXTERN_INLINE _GL_UNUSED static +#endif + +/* In GCC 4.6 (inclusive) to 5.1 (exclusive), + suppress bogus "no previous prototype for 'FOO'" + and "no previous declaration for 'FOO'" diagnostics, + when FOO is an inline function in the header; see + and + . */ +#if __GNUC__ == 4 && 6 <= __GNUC_MINOR__ +# if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ +# define _GL_INLINE_HEADER_CONST_PRAGMA +# else +# define _GL_INLINE_HEADER_CONST_PRAGMA \ + _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"") +# endif +# define _GL_INLINE_HEADER_BEGIN \ + _Pragma ("GCC diagnostic push") \ + _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \ + _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \ + _GL_INLINE_HEADER_CONST_PRAGMA +# define _GL_INLINE_HEADER_END \ + _Pragma ("GCC diagnostic pop") +#else +# define _GL_INLINE_HEADER_BEGIN +# define _GL_INLINE_HEADER_END +#endif + +/* Define to 1 if the compiler supports the keyword '__inline'. */ +#define HAVE___INLINE 1 + +/* Define as const if the declaration of iconv() needs const. */ +#define ICONV_CONST + +/* Define to a symbolic name denoting the flavor of iconv_open() + implementation. */ +/* #undef ICONV_FLAVOR */ + +/* Define to the sub-directory where libtool stores uninstalled libraries. */ +#define LT_OBJDIR ".libs/" + +/* Use GNU style printf and scanf. */ +#ifndef __USE_MINGW_ANSI_STDIO +# define __USE_MINGW_ANSI_STDIO 1 +#endif + + +/* Define to 1 on musl libc. */ +/* #undef MUSL_LIBC */ + +/* Define to 1 if open() fails to recognize a trailing slash. */ +/* #undef OPEN_TRAILING_SLASH_BUG */ + +/* Name of package */ +#define PACKAGE "libidn2" + +/* Define to the address where bug reports for this package should be sent. */ +#define PACKAGE_BUGREPORT "help-libidn@gnu.org" + +/* Define to the full name of this package. */ +#define PACKAGE_NAME "Libidn2" + +/* String identifying the packager of this software */ +/* #undef PACKAGE_PACKAGER */ + +/* Packager info for bug reports (URL/e-mail/...) */ +/* #undef PACKAGE_PACKAGER_BUG_REPORTS */ + +/* Packager-specific version information */ +/* #undef PACKAGE_PACKAGER_VERSION */ + +/* Define to the full name and version of this package. */ +#define PACKAGE_STRING "Libidn2 2.3.8" + +/* Define to the one symbol short name of this package. */ +#define PACKAGE_TARNAME "libidn2" + +/* Define to the home page for this package. */ +#define PACKAGE_URL "https://www.gnu.org/software/libidn/#libidn2" + +/* Define to the version of this package. */ +#define PACKAGE_VERSION "2.3.8" + +/* Define to the type that is the result of default argument promotions of + type mode_t. */ +#define PROMOTED_MODE_T int + +/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type + 'ptrdiff_t'. */ +/* #undef PTRDIFF_T_SUFFIX */ + +/* Define to 1 if stat needs help when passed a file name with a trailing + slash */ +/* #undef REPLACE_FUNC_STAT_FILE */ + +/* Define to 1 if strerror(0) does not return a message implying success. */ +#define REPLACE_STRERROR_0 1 + +/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type + 'sig_atomic_t'. */ +/* #undef SIG_ATOMIC_T_SUFFIX */ + +/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type + 'size_t'. */ +/* #undef SIZE_T_SUFFIX */ + +/* If using the C implementation of alloca, define if you know the + direction of stack growth for your system; otherwise it will be + automatically deduced at runtime. + STACK_DIRECTION > 0 => grows toward higher addresses + STACK_DIRECTION < 0 => grows toward lower addresses + STACK_DIRECTION = 0 => direction of growth unknown */ +/* #undef STACK_DIRECTION */ + +/* Define to 1 if the `S_IS*' macros in do not work properly. */ +/* #undef STAT_MACROS_BROKEN */ + +/* Define to 1 if all of the C90 standard headers exist (not just the ones + required in a freestanding environment). This macro is provided for + backward compatibility; new code need not use it. */ +#define STDC_HEADERS 1 + +/* Define to 1 if strerror_r returns char *. */ +/* #undef STRERROR_R_CHAR_P */ + +/* Define to 1 if the type of the st_atim member of a struct stat is struct + timespec. */ +/* #undef TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC */ + +/* Define to enable the declarations of ISO C 23 Annex K types and functions. */ +#if !(defined __STDC_WANT_LIB_EXT1__ && __STDC_WANT_LIB_EXT1__) +#undef/**/__STDC_WANT_LIB_EXT1__ +#define __STDC_WANT_LIB_EXT1__ 1 +#endif + + +/* Enable extensions on AIX 3, Interix. */ +#ifndef _ALL_SOURCE +# define _ALL_SOURCE 1 +#endif +/* Enable general extensions on macOS. */ +#ifndef _DARWIN_C_SOURCE +# define _DARWIN_C_SOURCE 1 +#endif +/* Enable general extensions on Solaris. */ +#ifndef __EXTENSIONS__ +# define __EXTENSIONS__ 1 +#endif +/* Enable GNU extensions on systems that have them. */ +#ifndef _GNU_SOURCE +# define _GNU_SOURCE 1 +#endif +/* Enable X/Open compliant socket functions that do not require linking + with -lxnet on HP-UX 11.11. */ +#ifndef _HPUX_ALT_XOPEN_SOCKET_API +# define _HPUX_ALT_XOPEN_SOCKET_API 1 +#endif +/* Identify the host operating system as Minix. + This macro does not affect the system headers' behavior. + A future release of Autoconf may stop defining this macro. */ +#ifndef _MINIX +/* # undef _MINIX */ +#endif +/* Enable general extensions on NetBSD. + Enable NetBSD compatibility extensions on Minix. */ +#ifndef _NETBSD_SOURCE +# define _NETBSD_SOURCE 1 +#endif +/* Enable OpenBSD compatibility extensions on NetBSD. + Oddly enough, this does nothing on OpenBSD. */ +#ifndef _OPENBSD_SOURCE +# define _OPENBSD_SOURCE 1 +#endif +/* Define to 1 if needed for POSIX-compatible behavior. */ +#ifndef _POSIX_SOURCE +/* # undef _POSIX_SOURCE */ +#endif +/* Define to 2 if needed for POSIX-compatible behavior. */ +#ifndef _POSIX_1_SOURCE +/* # undef _POSIX_1_SOURCE */ +#endif +/* Enable POSIX-compatible threading on Solaris. */ +#ifndef _POSIX_PTHREAD_SEMANTICS +# define _POSIX_PTHREAD_SEMANTICS 1 +#endif +/* Enable extensions specified by ISO/IEC TS 18661-5:2014. */ +#ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__ +# define __STDC_WANT_IEC_60559_ATTRIBS_EXT__ 1 +#endif +/* Enable extensions specified by ISO/IEC TS 18661-1:2014. */ +#ifndef __STDC_WANT_IEC_60559_BFP_EXT__ +# define __STDC_WANT_IEC_60559_BFP_EXT__ 1 +#endif +/* Enable extensions specified by ISO/IEC TS 18661-2:2015. */ +#ifndef __STDC_WANT_IEC_60559_DFP_EXT__ +# define __STDC_WANT_IEC_60559_DFP_EXT__ 1 +#endif +/* Enable extensions specified by C23 Annex F. */ +#ifndef __STDC_WANT_IEC_60559_EXT__ +# define __STDC_WANT_IEC_60559_EXT__ 1 +#endif +/* Enable extensions specified by ISO/IEC TS 18661-4:2015. */ +#ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__ +# define __STDC_WANT_IEC_60559_FUNCS_EXT__ 1 +#endif +/* Enable extensions specified by C23 Annex H and ISO/IEC TS 18661-3:2015. */ +#ifndef __STDC_WANT_IEC_60559_TYPES_EXT__ +# define __STDC_WANT_IEC_60559_TYPES_EXT__ 1 +#endif +/* Enable extensions specified by ISO/IEC TR 24731-2:2010. */ +#ifndef __STDC_WANT_LIB_EXT2__ +# define __STDC_WANT_LIB_EXT2__ 1 +#endif +/* Enable extensions specified by ISO/IEC 24747:2009. */ +#ifndef __STDC_WANT_MATH_SPEC_FUNCS__ +# define __STDC_WANT_MATH_SPEC_FUNCS__ 1 +#endif +/* Enable extensions on HP NonStop. */ +#ifndef _TANDEM_SOURCE +# define _TANDEM_SOURCE 1 +#endif +/* Enable X/Open extensions. Define to 500 only if necessary + to make mbstate_t available. */ +#ifndef _XOPEN_SOURCE +/* # undef _XOPEN_SOURCE */ +#endif + + +/* Version number of package */ +#define VERSION "2.3.8" + +/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type + 'wchar_t'. */ +/* #undef WCHAR_T_SUFFIX */ + +/* Define to l, ll, u, ul, ull, etc., as suitable for constants of type + 'wint_t'. */ +/* #undef WINT_T_SUFFIX */ + +/* Number of bits in a file offset, on hosts where this is settable. */ +/* #undef _FILE_OFFSET_BITS */ + +/* True if the compiler says it groks GNU C version MAJOR.MINOR. + Except that + - clang groks GNU C 4.2, even on Windows, where it does not define + __GNUC__. + - The OpenMandriva-modified clang compiler pretends that it groks + GNU C version 13.1, but it doesn't: It does not support + __attribute__ ((__malloc__ (f, i))), nor does it support + __attribute__ ((__warning__ (message))) on a function redeclaration. + - Users can make clang lie as well, through the -fgnuc-version option. */ +#if defined __GNUC__ && defined __GNUC_MINOR__ && !defined __clang__ +# define _GL_GNUC_PREREQ(major, minor) \ + ((major) < __GNUC__ + ((minor) <= __GNUC_MINOR__)) +#elif defined __clang__ + /* clang really only groks GNU C 4.2. */ +# define _GL_GNUC_PREREQ(major, minor) \ + ((major) < 4 + ((minor) <= 2)) +#else +# define _GL_GNUC_PREREQ(major, minor) 0 +#endif + + +/* Define to enable the declarations of ISO C 11 types and functions. */ +/* #undef _ISOC11_SOURCE */ + +/* Define to 1 on platforms where this makes off_t a 64-bit type. */ +/* #undef _LARGE_FILES */ + +/* Define so that AIX headers are more compatible with GNU/Linux. */ +#define _LINUX_SOURCE_COMPAT 1 + +/* The _Noreturn keyword of C11. */ +#ifndef _Noreturn +# if (defined __cplusplus \ + && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \ + || (defined _MSC_VER && 1900 <= _MSC_VER)) \ + && 0) + /* [[noreturn]] is not practically usable, because with it the syntax + extern _Noreturn void func (...); + would not be valid; such a declaration would only be valid with 'extern' + and '_Noreturn' swapped, or without the 'extern' keyword. However, some + AIX system header files and several gnulib header files use precisely + this syntax with 'extern'. */ +# define _Noreturn [[noreturn]] +# elif (defined __clang__ && __clang_major__ < 16 \ + && defined _GL_WORK_AROUND_LLVM_BUG_59792) + /* Compile with -D_GL_WORK_AROUND_LLVM_BUG_59792 to work around + that rare LLVM bug, though you may get many false-alarm warnings. */ +# define _Noreturn +# elif ((!defined __cplusplus || defined __clang__) \ + && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \ + || (!defined __STRICT_ANSI__ \ + && (_GL_GNUC_PREREQ (4, 7) \ + || (defined __apple_build_version__ \ + ? 6000000 <= __apple_build_version__ \ + : 3 < __clang_major__ + (5 <= __clang_minor__)))))) + /* _Noreturn works as-is. */ +# elif _GL_GNUC_PREREQ (2, 8) || defined __clang__ || 0x5110 <= __SUNPRO_C +# define _Noreturn __attribute__ ((__noreturn__)) +# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0) +# define _Noreturn __declspec (noreturn) +# else +# define _Noreturn +# endif +#endif + + +/* Number of bits in time_t, on hosts where this is settable. */ +/* #undef _TIME_BITS */ + +/* For standard stat data types on VMS. */ +#define _USE_STD_STAT 1 + +/* Define to rpl_ if the getopt replacement functions and variables should be + used. */ +#define __GETOPT_PREFIX rpl_ + +/* Define to 1 on platforms where this makes time_t a 64-bit type. */ +/* #undef __MINGW_USE_VC2005_COMPAT */ + +/* Define to 1 if the system predates C++11. */ +/* #undef __STDC_CONSTANT_MACROS */ + +/* Define to 1 if the system predates C++11. */ +/* #undef __STDC_LIMIT_MACROS */ + +/* Define to 1 if C does not support variable-length arrays, and if the + compiler does not already define this. */ +/* #undef __STDC_NO_VLA__ */ + +/* The _GL_ASYNC_SAFE marker should be attached to functions that are + signal handlers (for signals other than SIGABRT, SIGPIPE) or can be + invoked from such signal handlers. Such functions have some restrictions: + * All functions that it calls should be marked _GL_ASYNC_SAFE as well, + or should be listed as async-signal-safe in POSIX + + section 2.4.3. Note that malloc(), sprintf(), and fwrite(), in + particular, are NOT async-signal-safe. + * All memory locations (variables and struct fields) that these functions + access must be marked 'volatile'. This holds for both read and write + accesses. Otherwise the compiler might optimize away stores to and + reads from such locations that occur in the program, depending on its + data flow analysis. For example, when the program contains a loop + that is intended to inspect a variable set from within a signal handler + while (!signal_occurred) + ; + the compiler is allowed to transform this into an endless loop if the + variable 'signal_occurred' is not declared 'volatile'. + Additionally, recall that: + * A signal handler should not modify errno (except if it is a handler + for a fatal signal and ends by raising the same signal again, thus + provoking the termination of the process). If it invokes a function + that may clobber errno, it needs to save and restore the value of + errno. */ +#define _GL_ASYNC_SAFE + + +/* Attributes. */ +/* Define _GL_HAS_ATTRIBUTE only once, because on FreeBSD, with gcc < 5, if + gets included once again after , __has_attribute(x) + expands to 0 always, and redefining _GL_HAS_ATTRIBUTE would turn off all + attributes. */ +#ifndef _GL_HAS_ATTRIBUTE +# if (defined __has_attribute \ + && (!defined __clang_minor__ \ + || (defined __apple_build_version__ \ + ? 7000000 <= __apple_build_version__ \ + : 5 <= __clang_major__))) +# define _GL_HAS_ATTRIBUTE(attr) __has_attribute (__##attr##__) +# else +# define _GL_HAS_ATTRIBUTE(attr) _GL_ATTR_##attr +# define _GL_ATTR_alloc_size _GL_GNUC_PREREQ (4, 3) +# define _GL_ATTR_always_inline _GL_GNUC_PREREQ (3, 2) +# define _GL_ATTR_artificial _GL_GNUC_PREREQ (4, 3) +# define _GL_ATTR_cold _GL_GNUC_PREREQ (4, 3) +# define _GL_ATTR_const _GL_GNUC_PREREQ (2, 95) +# define _GL_ATTR_deprecated _GL_GNUC_PREREQ (3, 1) +# define _GL_ATTR_diagnose_if 0 +# define _GL_ATTR_error _GL_GNUC_PREREQ (4, 3) +# define _GL_ATTR_externally_visible _GL_GNUC_PREREQ (4, 1) +# define _GL_ATTR_fallthrough _GL_GNUC_PREREQ (7, 0) +# define _GL_ATTR_format _GL_GNUC_PREREQ (2, 7) +# define _GL_ATTR_leaf _GL_GNUC_PREREQ (4, 6) +# define _GL_ATTR_malloc _GL_GNUC_PREREQ (3, 0) +# ifdef _ICC +# define _GL_ATTR_may_alias 0 +# else +# define _GL_ATTR_may_alias _GL_GNUC_PREREQ (3, 3) +# endif +# define _GL_ATTR_noinline _GL_GNUC_PREREQ (3, 1) +# define _GL_ATTR_nonnull _GL_GNUC_PREREQ (3, 3) +# define _GL_ATTR_nonstring _GL_GNUC_PREREQ (8, 0) +# define _GL_ATTR_nothrow _GL_GNUC_PREREQ (3, 3) +# define _GL_ATTR_packed _GL_GNUC_PREREQ (2, 7) +# define _GL_ATTR_pure _GL_GNUC_PREREQ (2, 96) +# define _GL_ATTR_reproducible 0 /* not yet supported, as of GCC 14 */ +# define _GL_ATTR_returns_nonnull _GL_GNUC_PREREQ (4, 9) +# define _GL_ATTR_sentinel _GL_GNUC_PREREQ (4, 0) +# define _GL_ATTR_unsequenced 0 /* not yet supported, as of GCC 14 */ +# define _GL_ATTR_unused _GL_GNUC_PREREQ (2, 7) +# define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4) +# endif +#endif + +/* Use __has_c_attribute if available. However, do not use with + pre-C23 GCC, which can issue false positives if -Wpedantic. */ +#if (defined __has_c_attribute \ + && ! (_GL_GNUC_PREREQ (4, 6) \ + && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) <= 201710)) +# define _GL_HAVE___HAS_C_ATTRIBUTE 1 +#else +# define _GL_HAVE___HAS_C_ATTRIBUTE 0 +#endif + +/* Attributes in bracket syntax [[...]] vs. attributes in __attribute__((...)) + syntax, in function declarations. There are two problems here. + (Last tested with gcc/g++ 14 and clang/clang++ 18.) + + 1) We want that the _GL_ATTRIBUTE_* can be cumulated on the same declaration + in any order. + =========================== foo.c = foo.cc =========================== + __attribute__ ((__deprecated__)) [[__nodiscard__]] int bar1 (int); + [[__nodiscard__]] __attribute__ ((__deprecated__)) int bar2 (int); + ====================================================================== + This gives a syntax error + - in C mode with gcc + , and + - in C++ mode with clang++ version < 16, and + - in C++ mode, inside extern "C" {}, still in newer clang++ versions + . + */ +/* Define if, in a function declaration, the attributes in bracket syntax + [[...]] must come before the attributes in __attribute__((...)) syntax. + If this is defined, it is best to avoid the bracket syntax, so that the + various _GL_ATTRIBUTE_* can be cumulated on the same declaration in any + order. */ +#ifdef __cplusplus +# if defined __clang__ +# define _GL_BRACKET_BEFORE_ATTRIBUTE 1 +# endif +#else +# if defined __GNUC__ && !defined __clang__ +# define _GL_BRACKET_BEFORE_ATTRIBUTE 1 +# endif +#endif +/* + 2) We want that the _GL_ATTRIBUTE_* can be placed in a declaration + - without 'extern', in C as well as in C++, + - with 'extern', in C, + - with 'extern "C"', in C++ + in the same position. That is, we don't want to be forced to use a + macro which arranges for the attribute to come before 'extern' in + one case and after 'extern' in the other case, because such a macro + would make the source code of .h files pretty ugly. + =========================== foo.c = foo.cc =========================== + #ifdef __cplusplus + # define CC "C" + #else + # define CC + #endif + + #define ND [[__nodiscard__]] + #define WUR __attribute__((__warn_unused_result__)) + + #ifdef __cplusplus + extern "C" { + #endif + // gcc clang g++ clang++ + + ND int foo (int); + int ND foo (int); // warn error warn error + int foo ND (int); + int foo (int) ND; // warn error warn error + + WUR int foo (int); + int WUR foo (int); + int fo1 WUR (int); // error error error error + int foo (int) WUR; + + #ifdef __cplusplus + } + #endif + + // gcc clang g++ clang++ + + ND extern CC int foo (int); // error error + extern CC ND int foo (int); // error error + extern CC int ND foo (int); // warn error warn error + extern CC int foo ND (int); + extern CC int foo (int) ND; // warn error warn error + + WUR extern CC int foo (int); // warn + extern CC WUR int foo (int); + extern CC int WUR foo (int); + extern CC int foo WUR (int); // error error error error + extern CC int foo (int) WUR; + + ND EXTERN_C_FUNC int foo (int); // error error + EXTERN_C_FUNC ND int foo (int); + EXTERN_C_FUNC int ND foo (int); // warn error warn error + EXTERN_C_FUNC int foo ND (int); + EXTERN_C_FUNC int foo (int) ND; // warn error warn error + + WUR EXTERN_C_FUNC int foo (int); // warn + EXTERN_C_FUNC WUR int foo (int); + EXTERN_C_FUNC int WUR foo (int); + EXTERN_C_FUNC int fo2 WUR (int); // error error error error + EXTERN_C_FUNC int foo (int) WUR; + ====================================================================== + So, if we insist on using the 'extern' keyword ('extern CC' idiom): + * If _GL_ATTRIBUTE_* expands to bracket syntax [[...]] + in both C and C++, there is one available position: + - between the function name and the parameter list. + * If _GL_ATTRIBUTE_* expands to __attribute__((...)) syntax + in both C and C++, there are several available positions: + - before the return type, + - between return type and function name, + - at the end of the declaration. + * If _GL_ATTRIBUTE_* expands to bracket syntax [[...]] in C and to + __attribute__((...)) syntax in C++, there is no available position: + it would need to come before 'extern' in C but after 'extern "C"' + in C++. + * If _GL_ATTRIBUTE_* expands to __attribute__((...)) syntax in C and + to bracket syntax [[...]] in C++, there is one available position: + - before the return type. + Whereas, if we use the 'EXTERN_C_FUNC' idiom, which conditionally + omits the 'extern' keyword: + * If _GL_ATTRIBUTE_* expands to bracket syntax [[...]] + in both C and C++, there are two available positions: + - before the return type, + - between the function name and the parameter list. + * If _GL_ATTRIBUTE_* expands to __attribute__((...)) syntax + in both C and C++, there are several available positions: + - before the return type, + - between return type and function name, + - at the end of the declaration. + * If _GL_ATTRIBUTE_* expands to bracket syntax [[...]] in C and to + __attribute__((...)) syntax in C++, there is one available position: + - before the return type. + * If _GL_ATTRIBUTE_* expands to __attribute__((...)) syntax in C and + to bracket syntax [[...]] in C++, there is one available position: + - before the return type. + The best choice is therefore to use the 'EXTERN_C_FUNC' idiom and + put the attributes before the return type. This works regardless + to what the _GL_ATTRIBUTE_* macros expand. + */ + +/* Attributes in bracket syntax [[...]] vs. attributes in __attribute__((...)) + syntax, in static/inline function definitions. + + There are similar constraints as for function declarations. However, here, + we cannot omit the storage-class specifier. Therefore, the following rule + applies: + * The macros + _GL_ATTRIBUTE_CONST + _GL_ATTRIBUTE_DEPRECATED + _GL_ATTRIBUTE_MAYBE_UNUSED + _GL_ATTRIBUTE_NODISCARD + _GL_ATTRIBUTE_PURE + _GL_ATTRIBUTE_REPRODUCIBLE + _GL_ATTRIBUTE_UNSEQUENCED + which may expand to bracket syntax [[...]], must come first, before the + storage-class specifier. + * Other _GL_ATTRIBUTE_* macros, that expand to __attribute__((...)) syntax, + are better placed between the storage-class specifier and the return + type. + */ + +/* Attributes in bracket syntax [[...]] vs. attributes in __attribute__((...)) + syntax, in variable declarations. + + At which position can they be placed? + (Last tested with gcc/g++ 14 and clang/clang++ 18.) + + =========================== foo.c = foo.cc =========================== + #ifdef __cplusplus + # define CC "C" + #else + # define CC + #endif + + #define BD [[__deprecated__]] + #define AD __attribute__ ((__deprecated__)) + + // gcc clang g++ clang++ + + BD extern CC int var; // error error + extern CC BD int var; // error error + extern CC int BD var; // warn error warn error + extern CC int var BD; + + AD extern CC int var; // warn + extern CC AD int var; + extern CC int AD var; + extern CC int var AD; + + BD extern CC int z[]; // error error + extern CC BD int z[]; // error error + extern CC int BD z[]; // warn error warn error + extern CC int z1 BD []; + extern CC int z[] BD; // warn error error + + AD extern CC int z[]; // warn + extern CC AD int z[]; + extern CC int AD z[]; + extern CC int z2 AD []; // error error error error + extern CC int z[] AD; + ====================================================================== + + * For non-array variables, the only good position is after the variable name, + that is, at the end of the declaration. + * For array variables, you will need to distinguish C and C++: + - In C, before the 'extern' keyword. + - In C++, between the 'extern "C"' and the variable's type. + */ + +/* _GL_ATTRIBUTE_ALLOC_SIZE ((N)) declares that the Nth argument of the function + is the size of the returned memory block. + _GL_ATTRIBUTE_ALLOC_SIZE ((M, N)) declares that the Mth argument multiplied + by the Nth argument of the function is the size of the returned memory block. + */ +/* Applies to: functions, pointer to functions, function types. */ +#ifndef _GL_ATTRIBUTE_ALLOC_SIZE +# if _GL_HAS_ATTRIBUTE (alloc_size) +# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args)) +# else +# define _GL_ATTRIBUTE_ALLOC_SIZE(args) +# endif +#endif + +/* _GL_ATTRIBUTE_ALWAYS_INLINE tells that the compiler should always inline the + function and report an error if it cannot do so. */ +/* Applies to: functions. */ +#ifndef _GL_ATTRIBUTE_ALWAYS_INLINE +# if _GL_HAS_ATTRIBUTE (always_inline) +# define _GL_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((__always_inline__)) +# else +# define _GL_ATTRIBUTE_ALWAYS_INLINE +# endif +#endif + +/* _GL_ATTRIBUTE_ARTIFICIAL declares that the function is not important to show + in stack traces when debugging. The compiler should omit the function from + stack traces. */ +/* Applies to: functions. */ +#ifndef _GL_ATTRIBUTE_ARTIFICIAL +# if _GL_HAS_ATTRIBUTE (artificial) +# define _GL_ATTRIBUTE_ARTIFICIAL __attribute__ ((__artificial__)) +# else +# define _GL_ATTRIBUTE_ARTIFICIAL +# endif +#endif + +/* _GL_ATTRIBUTE_COLD declares that the function is rarely executed. */ +/* Applies to: functions. */ +/* Avoid __attribute__ ((cold)) on MinGW; see thread starting at + . + Also, Oracle Studio 12.6 requires 'cold' not '__cold__'. */ +#ifndef _GL_ATTRIBUTE_COLD +# if _GL_HAS_ATTRIBUTE (cold) && !defined __MINGW32__ +# ifndef __SUNPRO_C +# define _GL_ATTRIBUTE_COLD __attribute__ ((__cold__)) +# else +# define _GL_ATTRIBUTE_COLD __attribute__ ((cold)) +# endif +# else +# define _GL_ATTRIBUTE_COLD +# endif +#endif + +/* _GL_ATTRIBUTE_CONST declares: + It is OK for a compiler to move calls to the function and to omit + calls to the function if another call has the same arguments or the + result is not used. + This attribute is safe for a function that neither depends on + nor affects state, and always returns exactly once - + e.g., does not raise an exception, call longjmp, or loop forever. + (This attribute is stricter than _GL_ATTRIBUTE_PURE because the + function cannot observe state. It is stricter than + _GL_ATTRIBUTE_UNSEQUENCED because the function must return exactly + once and cannot depend on state addressed by its arguments.) */ +/* Applies to: functions. */ +#ifndef _GL_ATTRIBUTE_CONST +# if _GL_HAS_ATTRIBUTE (const) +# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__)) +# else +# define _GL_ATTRIBUTE_CONST _GL_ATTRIBUTE_UNSEQUENCED +# endif +#endif + +/* _GL_ATTRIBUTE_DEALLOC (F, I) declares that the function returns pointers + that can be freed by passing them as the Ith argument to the + function F. + _GL_ATTRIBUTE_DEALLOC_FREE declares that the function returns pointers that + can be freed via 'free'; it can be used only after declaring 'free'. */ +/* Applies to: functions. Cannot be used on inline functions. */ +#ifndef _GL_ATTRIBUTE_DEALLOC +# if _GL_GNUC_PREREQ (11, 0) +# define _GL_ATTRIBUTE_DEALLOC(f, i) __attribute__ ((__malloc__ (f, i))) +# else +# define _GL_ATTRIBUTE_DEALLOC(f, i) +# endif +#endif +/* If gnulib's or has already defined this macro, continue + to use this earlier definition, since may not have been included + yet. */ +#ifndef _GL_ATTRIBUTE_DEALLOC_FREE +# if defined __cplusplus && defined __GNUC__ && !defined __clang__ +/* Work around GCC bug */ +# define _GL_ATTRIBUTE_DEALLOC_FREE \ + _GL_ATTRIBUTE_DEALLOC ((void (*) (void *)) free, 1) +# else +# define _GL_ATTRIBUTE_DEALLOC_FREE \ + _GL_ATTRIBUTE_DEALLOC (free, 1) +# endif +#endif + +/* _GL_ATTRIBUTE_DEPRECATED: Declares that an entity is deprecated. + The compiler may warn if the entity is used. */ +/* Applies to: + - function, variable, + - struct, union, struct/union member, + - enumeration, enumeration item, + - typedef, + in C++ also: namespace, class, template specialization. */ +#ifndef _GL_ATTRIBUTE_DEPRECATED +# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE +# if _GL_HAVE___HAS_C_ATTRIBUTE +# if __has_c_attribute (__deprecated__) +# define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]] +# endif +# endif +# endif +# if !defined _GL_ATTRIBUTE_DEPRECATED && _GL_HAS_ATTRIBUTE (deprecated) +# define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__)) +# endif +# ifndef _GL_ATTRIBUTE_DEPRECATED +# define _GL_ATTRIBUTE_DEPRECATED +# endif +#endif + +/* _GL_ATTRIBUTE_ERROR(msg) requests an error if a function is called and + the function call is not optimized away. + _GL_ATTRIBUTE_WARNING(msg) requests a warning if a function is called and + the function call is not optimized away. */ +/* Applies to: functions. */ +#if !(defined _GL_ATTRIBUTE_ERROR && defined _GL_ATTRIBUTE_WARNING) +# if _GL_HAS_ATTRIBUTE (error) +# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__error__ (msg))) +# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__warning__ (msg))) +# elif _GL_HAS_ATTRIBUTE (diagnose_if) +# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__diagnose_if__ (1, msg, "error"))) +# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__diagnose_if__ (1, msg, "warning"))) +# else +# define _GL_ATTRIBUTE_ERROR(msg) +# define _GL_ATTRIBUTE_WARNING(msg) +# endif +#endif + +/* _GL_ATTRIBUTE_EXTERNALLY_VISIBLE declares that the entity should remain + visible to debuggers etc., even with '-fwhole-program'. */ +/* Applies to: functions, variables. */ +#ifndef _GL_ATTRIBUTE_EXTERNALLY_VISIBLE +# if _GL_HAS_ATTRIBUTE (externally_visible) +# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((externally_visible)) +# else +# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE +# endif +#endif + +/* _GL_ATTRIBUTE_FALLTHROUGH declares that it is not a programming mistake if + the control flow falls through to the immediately following 'case' or + 'default' label. The compiler should not warn in this case. */ +/* Applies to: Empty statement (;), inside a 'switch' statement. */ +/* Always expands to something. */ +#ifndef _GL_ATTRIBUTE_FALLTHROUGH +# if _GL_HAVE___HAS_C_ATTRIBUTE +# if __has_c_attribute (__fallthrough__) +# define _GL_ATTRIBUTE_FALLTHROUGH [[__fallthrough__]] +# endif +# endif +# if !defined _GL_ATTRIBUTE_FALLTHROUGH && _GL_HAS_ATTRIBUTE (fallthrough) +# define _GL_ATTRIBUTE_FALLTHROUGH __attribute__ ((__fallthrough__)) +# endif +# ifndef _GL_ATTRIBUTE_FALLTHROUGH +# define _GL_ATTRIBUTE_FALLTHROUGH ((void) 0) +# endif +#endif + +/* _GL_ATTRIBUTE_FORMAT ((ARCHETYPE, STRING-INDEX, FIRST-TO-CHECK)) + declares that the STRING-INDEXth function argument is a format string of + style ARCHETYPE, which is one of: + printf, gnu_printf + scanf, gnu_scanf, + strftime, gnu_strftime, + strfmon, + or the same thing prefixed and suffixed with '__'. + If FIRST-TO-CHECK is not 0, arguments starting at FIRST-TO_CHECK + are suitable for the format string. */ +/* Applies to: functions. */ +#ifndef _GL_ATTRIBUTE_FORMAT +# if _GL_HAS_ATTRIBUTE (format) +# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) +# else +# define _GL_ATTRIBUTE_FORMAT(spec) +# endif +#endif + +/* _GL_ATTRIBUTE_LEAF declares that if the function is called from some other + compilation unit, it executes code from that unit only by return or by + exception handling. This declaration lets the compiler optimize that unit + more aggressively. */ +/* Applies to: functions. */ +#ifndef _GL_ATTRIBUTE_LEAF +# if _GL_HAS_ATTRIBUTE (leaf) +# define _GL_ATTRIBUTE_LEAF __attribute__ ((__leaf__)) +# else +# define _GL_ATTRIBUTE_LEAF +# endif +#endif + +/* _GL_ATTRIBUTE_MALLOC declares that the function returns a pointer to freshly + allocated memory. */ +/* Applies to: functions. */ +#ifndef _GL_ATTRIBUTE_MALLOC +# if _GL_HAS_ATTRIBUTE (malloc) +# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__)) +# else +# define _GL_ATTRIBUTE_MALLOC +# endif +#endif + +/* _GL_ATTRIBUTE_MAY_ALIAS declares that pointers to the type may point to the + same storage as pointers to other types. Thus this declaration disables + strict aliasing optimization. */ +/* Applies to: types. */ +/* Oracle Studio 12.6 mishandles may_alias despite __has_attribute OK. */ +#ifndef _GL_ATTRIBUTE_MAY_ALIAS +# if _GL_HAS_ATTRIBUTE (may_alias) && !defined __SUNPRO_C +# define _GL_ATTRIBUTE_MAY_ALIAS __attribute__ ((__may_alias__)) +# else +# define _GL_ATTRIBUTE_MAY_ALIAS +# endif +#endif + +/* _GL_ATTRIBUTE_MAYBE_UNUSED declares that it is not a programming mistake if + the entity is not used. The compiler should not warn if the entity is not + used. */ +/* Applies to: + - function, variable, + - struct, union, struct/union member, + - enumeration, enumeration item, + - typedef, + in C++ also: class. */ +/* In C++ and C23, this is spelled [[__maybe_unused__]]. + GCC's syntax is __attribute__ ((__unused__)). + clang supports both syntaxes. Except that with clang ≥ 6, < 10, in C++ mode, + __has_c_attribute (__maybe_unused__) yields true but the use of + [[__maybe_unused__]] nevertheless produces a warning. */ +#ifndef _GL_ATTRIBUTE_MAYBE_UNUSED +# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE +# if defined __clang__ && defined __cplusplus +# if !defined __apple_build_version__ && __clang_major__ >= 10 +# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]] +# endif +# elif _GL_HAVE___HAS_C_ATTRIBUTE +# if __has_c_attribute (__maybe_unused__) +# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]] +# endif +# endif +# endif +# ifndef _GL_ATTRIBUTE_MAYBE_UNUSED +# define _GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_UNUSED +# endif +#endif +/* Alternative spelling of this macro, for convenience and for + compatibility with glibc/include/libc-symbols.h. */ +#define _GL_UNUSED _GL_ATTRIBUTE_MAYBE_UNUSED +/* Earlier spellings of this macro. */ +#define _UNUSED_PARAMETER_ _GL_ATTRIBUTE_MAYBE_UNUSED + +/* _GL_ATTRIBUTE_NODISCARD declares that the caller of the function should not + discard the return value. The compiler may warn if the caller does not use + the return value, unless the caller uses something like ignore_value. */ +/* Applies to: function, enumeration, class. */ +#ifndef _GL_ATTRIBUTE_NODISCARD +# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE +# if defined __clang__ && defined __cplusplus + /* With clang up to 15.0.6 (at least), in C++ mode, [[__nodiscard__]] produces + a warning. + The 1000 below means a yet unknown threshold. When clang++ version X + starts supporting [[__nodiscard__]] without warning about it, you can + replace the 1000 with X. */ +# if __clang_major__ >= 1000 +# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]] +# endif +# elif _GL_HAVE___HAS_C_ATTRIBUTE +# if __has_c_attribute (__nodiscard__) +# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]] +# endif +# endif +# endif +# if !defined _GL_ATTRIBUTE_NODISCARD && _GL_HAS_ATTRIBUTE (warn_unused_result) +# define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__)) +# endif +# ifndef _GL_ATTRIBUTE_NODISCARD +# define _GL_ATTRIBUTE_NODISCARD +# endif +#endif + +/* _GL_ATTRIBUTE_NOINLINE tells that the compiler should not inline the + function. */ +/* Applies to: functions. */ +#ifndef _GL_ATTRIBUTE_NOINLINE +# if _GL_HAS_ATTRIBUTE (noinline) +# define _GL_ATTRIBUTE_NOINLINE __attribute__ ((__noinline__)) +# else +# define _GL_ATTRIBUTE_NOINLINE +# endif +#endif + +/* _GL_ATTRIBUTE_NONNULL ((N1, N2,...)) declares that the arguments N1, N2,... + must not be NULL. + _GL_ATTRIBUTE_NONNULL () declares that all pointer arguments must not be + null. */ +/* Applies to: functions. */ +#ifndef _GL_ATTRIBUTE_NONNULL +# if _GL_HAS_ATTRIBUTE (nonnull) +# define _GL_ATTRIBUTE_NONNULL(args) __attribute__ ((__nonnull__ args)) +# else +# define _GL_ATTRIBUTE_NONNULL(args) +# endif +#endif + +/* _GL_ATTRIBUTE_NONSTRING declares that the contents of a character array is + not meant to be NUL-terminated. */ +/* Applies to: struct/union members and variables that are arrays of element + type '[[un]signed] char'. */ +#ifndef _GL_ATTRIBUTE_NONSTRING +# if _GL_HAS_ATTRIBUTE (nonstring) +# define _GL_ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__)) +# else +# define _GL_ATTRIBUTE_NONSTRING +# endif +#endif + +/* There is no _GL_ATTRIBUTE_NORETURN; use _Noreturn instead. */ + +/* _GL_ATTRIBUTE_NOTHROW declares that the function does not throw exceptions. + */ +/* Applies to: functions. */ +/* After a function's parameter list, this attribute must come first, before + other attributes. */ +#ifndef _GL_ATTRIBUTE_NOTHROW +# if defined __cplusplus +# if _GL_GNUC_PREREQ (2, 8) || __clang_major__ >= 4 +# if __cplusplus >= 201103L +# define _GL_ATTRIBUTE_NOTHROW noexcept (true) +# else +# define _GL_ATTRIBUTE_NOTHROW throw () +# endif +# else +# define _GL_ATTRIBUTE_NOTHROW +# endif +# else +# if _GL_HAS_ATTRIBUTE (nothrow) +# define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__)) +# else +# define _GL_ATTRIBUTE_NOTHROW +# endif +# endif +#endif + +/* _GL_ATTRIBUTE_PACKED declares: + For struct members: The member has the smallest possible alignment. + For struct, union, class: All members have the smallest possible alignment, + minimizing the memory required. */ +/* Applies to: struct members, struct, union, + in C++ also: class. */ +#ifndef _GL_ATTRIBUTE_PACKED +/* Oracle Studio 12.6 miscompiles code with __attribute__ ((__packed__)) despite + __has_attribute OK. */ +# if _GL_HAS_ATTRIBUTE (packed) && !defined __SUNPRO_C +# define _GL_ATTRIBUTE_PACKED __attribute__ ((__packed__)) +# else +# define _GL_ATTRIBUTE_PACKED +# endif +#endif + +/* _GL_ATTRIBUTE_PURE declares: + It is OK for a compiler to move calls to the function and to omit + calls to the function if another call has the same arguments or the + result is not used, and if observable state is the same. + This attribute is safe for a function that does not affect observable state + and always returns exactly once. + (This attribute is looser than _GL_ATTRIBUTE_CONST because the function + can depend on observable state. It is stricter than + _GL_ATTRIBUTE_REPRODUCIBLE because the function must return exactly + once and cannot affect state addressed by its arguments.) */ +/* Applies to: functions. */ +#ifndef _GL_ATTRIBUTE_PURE +# if _GL_HAS_ATTRIBUTE (pure) +# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__)) +# else +# define _GL_ATTRIBUTE_PURE _GL_ATTRIBUTE_REPRODUCIBLE +# endif +#endif + +/* _GL_ATTRIBUTE_REPRODUCIBLE declares: + It is OK for a compiler to move calls to the function and to omit duplicate + calls to the function with the same arguments, so long as the state + addressed by its arguments is the same and is updated in time for + the rest of the program. + This attribute is safe for a function that is effectless and idempotent; see + ISO C 23 § 6.7.12.7 for a definition of these terms. + (This attribute is looser than _GL_ATTRIBUTE_UNSEQUENCED because + the function need not be stateless and idempotent. It is looser + than _GL_ATTRIBUTE_PURE because the function need not return + exactly once and can affect state addressed by its arguments.) + See also and + . + ATTENTION! Efforts are underway to change the meaning of this attribute. + See . */ +/* Applies to: functions, pointer to functions, function types. */ +#ifndef _GL_ATTRIBUTE_REPRODUCIBLE +/* This may be revisited when gcc and clang support [[reproducible]] or possibly + __attribute__ ((__reproducible__)). */ +# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE +# if _GL_HAS_ATTRIBUTE (reproducible) +# define _GL_ATTRIBUTE_REPRODUCIBLE [[reproducible]] +# endif +# endif +# ifndef _GL_ATTRIBUTE_REPRODUCIBLE +# define _GL_ATTRIBUTE_REPRODUCIBLE +# endif +#endif + +/* _GL_ATTRIBUTE_RETURNS_NONNULL declares that the function's return value is + a non-NULL pointer. */ +/* Applies to: functions. */ +#ifndef _GL_ATTRIBUTE_RETURNS_NONNULL +# if _GL_HAS_ATTRIBUTE (returns_nonnull) +# define _GL_ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__)) +# else +# define _GL_ATTRIBUTE_RETURNS_NONNULL +# endif +#endif + +/* _GL_ATTRIBUTE_SENTINEL(pos) declares that the variadic function expects a + trailing NULL argument. + _GL_ATTRIBUTE_SENTINEL () - The last argument is NULL (requires C99). + _GL_ATTRIBUTE_SENTINEL ((N)) - The (N+1)st argument from the end is NULL. */ +/* Applies to: functions. */ +#ifndef _GL_ATTRIBUTE_SENTINEL +# if _GL_HAS_ATTRIBUTE (sentinel) +# define _GL_ATTRIBUTE_SENTINEL(pos) __attribute__ ((__sentinel__ pos)) +# else +# define _GL_ATTRIBUTE_SENTINEL(pos) +# endif +#endif + +/* _GL_ATTRIBUTE_UNSEQUENCED declares: + It is OK for a compiler to move calls to the function and to omit duplicate + calls to the function with the same arguments, so long as the state + addressed by its arguments is the same. + This attribute is safe for a function that is effectless, idempotent, + stateless, and independent; see ISO C 23 § 6.7.12.7 for a definition of + these terms. + (This attribute is stricter than _GL_ATTRIBUTE_REPRODUCIBLE because + the function must be stateless and independent. It is looser than + _GL_ATTRIBUTE_CONST because the function need not return exactly + once and can depend on state addressed by its arguments.) + See also and + . + ATTENTION! Efforts are underway to change the meaning of this attribute. + See . */ +/* Applies to: functions, pointer to functions, function types. */ +#ifndef _GL_ATTRIBUTE_UNSEQUENCED +/* This may be revisited when gcc and clang support [[unsequenced]] or possibly + __attribute__ ((__unsequenced__)). */ +# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE +# if _GL_HAS_ATTRIBUTE (unsequenced) +# define _GL_ATTRIBUTE_UNSEQUENCED [[unsequenced]] +# endif +# endif +# ifndef _GL_ATTRIBUTE_UNSEQUENCED +# define _GL_ATTRIBUTE_UNSEQUENCED +# endif +#endif + +/* A helper macro. Don't use it directly. */ +#ifndef _GL_ATTRIBUTE_UNUSED +# if _GL_HAS_ATTRIBUTE (unused) +# define _GL_ATTRIBUTE_UNUSED __attribute__ ((__unused__)) +# else +# define _GL_ATTRIBUTE_UNUSED +# endif +#endif + + +/* _GL_UNUSED_LABEL; declares that it is not a programming mistake if the + immediately preceding label is not used. The compiler should not warn + if the label is not used. */ +/* Applies to: label (both in C and C++). */ +/* Note that g++ < 4.5 does not support the '__attribute__ ((__unused__)) ;' + syntax. But clang does. */ +#ifndef _GL_UNUSED_LABEL +# if !(defined __cplusplus && !_GL_GNUC_PREREQ (4, 5)) || defined __clang__ +# define _GL_UNUSED_LABEL _GL_ATTRIBUTE_UNUSED +# else +# define _GL_UNUSED_LABEL +# endif +#endif + +/* The following attributes enable detection of multithread-safety problems + and resource leaks at compile-time, by clang ≥ 15, when the warning option + -Wthread-safety is enabled. For usage, see + . */ +#ifndef _GL_ATTRIBUTE_CAPABILITY_TYPE +# if __clang_major__ >= 15 +# define _GL_ATTRIBUTE_CAPABILITY_TYPE(concept) \ + __attribute__ ((__capability__ (concept))) +# else +# define _GL_ATTRIBUTE_CAPABILITY_TYPE(concept) +# endif +#endif +#ifndef _GL_ATTRIBUTE_ACQUIRE_CAPABILITY +# if __clang_major__ >= 15 +# define _GL_ATTRIBUTE_ACQUIRE_CAPABILITY(resource) \ + __attribute__ ((__acquire_capability__ (resource))) +# else +# define _GL_ATTRIBUTE_ACQUIRE_CAPABILITY(resource) +# endif +#endif +#ifndef _GL_ATTRIBUTE_RELEASE_CAPABILITY +# if __clang_major__ >= 15 +# define _GL_ATTRIBUTE_RELEASE_CAPABILITY(resource) \ + __attribute__ ((__release_capability__ (resource))) +# else +# define _GL_ATTRIBUTE_RELEASE_CAPABILITY(resource) +# endif +#endif + + +/* In C++, there is the concept of "language linkage", that encompasses + name mangling and function calling conventions. + The following macros start and end a block of "C" linkage. */ +#ifdef __cplusplus +# define _GL_BEGIN_C_LINKAGE extern "C" { +# define _GL_END_C_LINKAGE } +#else +# define _GL_BEGIN_C_LINKAGE +# define _GL_END_C_LINKAGE +#endif + + +/* A replacement for va_copy, if needed. */ +#define gl_va_copy(a,b) ((a) = (b)) + +/* Define to `__inline__' or `__inline' if that's what the C compiler + calls it, or to nothing if 'inline' is not supported under any name. */ +#ifndef __cplusplus +/* #undef inline */ +#endif + +/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports + the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of + earlier versions), but does not display it by setting __GNUC_STDC_INLINE__. + __APPLE__ && __MACH__ test for Mac OS X. + __APPLE_CC__ tests for the Apple compiler and its version. + __STDC_VERSION__ tests for the C99 mode. */ +#if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__ +# define __GNUC_STDC_INLINE__ 1 +#endif + +/* _GL_CMP (n1, n2) performs a three-valued comparison on n1 vs. n2, where + n1 and n2 are expressions without side effects, that evaluate to real + numbers (excluding NaN). + It returns + 1 if n1 > n2 + 0 if n1 == n2 + -1 if n1 < n2 + The naïve code (n1 > n2 ? 1 : n1 < n2 ? -1 : 0) produces a conditional + jump with nearly all GCC versions up to GCC 10. + This variant (n1 < n2 ? -1 : n1 > n2) produces a conditional with many + GCC versions up to GCC 9. + The better code (n1 > n2) - (n1 < n2) from Hacker's Delight § 2-9 + avoids conditional jumps in all GCC versions >= 3.4. */ +#define _GL_CMP(n1, n2) (((n1) > (n2)) - ((n1) < (n2))) + + +/* Define to `int' if does not define. */ +/* #undef mode_t */ + +/* Define to the type of st_nlink in struct stat, or a supertype. */ +/* #undef nlink_t */ + +/* Define as a signed integer type capable of holding a process identifier. */ +/* #undef pid_t */ + +/* Define to the equivalent of the C99 'restrict' keyword, or to + nothing if this is not supported. Do not define if restrict is + supported only directly. */ +#define restrict __restrict__ +/* Work around a bug in older versions of Sun C++, which did not + #define __restrict__ or support _Restrict or __restrict__ + even though the corresponding Sun C compiler ended up with + "#define restrict _Restrict" or "#define restrict __restrict__" + in the previous line. This workaround can be removed once + we assume Oracle Developer Studio 12.5 (2016) or later. */ +#if defined __SUNPRO_CC && !defined __RESTRICT && !defined __restrict__ +# define _Restrict +# define __restrict__ +#endif + +/* Define to `unsigned int' if does not define. */ +/* #undef size_t */ + +/* Define as a signed type of the same size as size_t. */ +/* #undef ssize_t */ + + + /* This definition is a duplicate of the one in unitypes.h. + It is here so that we can cope with an older version of unitypes.h + that does not contain this definition and that is pre-installed among + the public header files. */ + # if defined __restrict \ + || 2 < __GNUC__ + (95 <= __GNUC_MINOR__) \ + || __clang_major__ >= 3 + # define _UC_RESTRICT __restrict + # elif 199901L <= __STDC_VERSION__ || defined restrict + # define _UC_RESTRICT restrict + # else + # define _UC_RESTRICT + # endif + + +/* Define as a macro for copying va_list variables. */ +/* #undef va_copy */ + +#if !(defined __cplusplus \ + ? 1 \ + : (defined __clang__ \ + ? __STDC_VERSION__ >= 202000L && __clang_major__ >= 15 \ + : (defined __GNUC__ \ + ? __STDC_VERSION__ >= 202000L && __GNUC__ >= 13 \ + : defined HAVE_C_BOOL))) +# if !defined __cplusplus && !defined __bool_true_false_are_defined +# if HAVE_STDBOOL_H +# include +# else +# if defined __SUNPRO_C +# error " is not usable with this configuration. To make it usable, add -D_STDC_C99= to $CC." +# else +# error " does not exist on this platform. Use gnulib module 'stdbool-c99' instead of gnulib module 'stdbool'." +# endif +# endif +# endif +# if !true +# define true (!false) +# endif +#endif + +#if (!(defined __clang__ \ + ? (defined __cplusplus \ + ? __cplusplus >= 201703L \ + : __STDC_VERSION__ >= 202000L && __clang_major__ >= 16 \ + && !defined __sun) \ + : (defined __GNUC__ \ + ? (defined __cplusplus \ + ? __cplusplus >= 201103L && __GNUG__ >= 6 \ + : __STDC_VERSION__ >= 202000L && __GNUC__ >= 13 \ + && !defined __sun) \ + : defined HAVE_C_STATIC_ASSERT)) \ + && !defined assert \ + && (!defined __cplusplus \ + || (__cpp_static_assert < 201411 \ + && __GNUG__ < 6 && __clang_major__ < 6))) + #include + #undef/**/assert + #ifdef __sgi + #undef/**/__ASSERT_H__ + #endif + /* Solaris 11.4 defines static_assert as a macro with 2 arguments. + We need it also to be invocable with a single argument. + Haiku 2022 does not define static_assert at all. */ + #if (__STDC_VERSION__ - 0 >= 201112L) && !defined __cplusplus + #undef/**/static_assert + #define static_assert _Static_assert + #endif +#endif + +/* lightpanda: macOS's does not declare strverscmp (a glibc + extension). gnulib normally declares it via its replacement + shim, which we don't pull in. lib/strverscmp.c provides the definition. */ +#ifndef _LIBIDN2_LP_DECLS +#define _LIBIDN2_LP_DECLS +extern int strverscmp(const char *, const char *); +#endif