Merge branch 'older-glibs' into 'master'

Build successfully on GLib 2.32

See merge request GNOME/libglnx!7

glnx-backport-autocleanups.h

@@ -49,7 +49,9 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(GMainContext, g_main_context_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GMainLoop, g_main_loop_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GSource, g_source_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GMappedFile, g_mapped_file_unref)
+#if GLIB_CHECK_VERSION(2, 36, 0)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GMarkupParseContext, g_markup_parse_context_unref)
+#endif
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(gchar, g_free)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GNode, g_node_destroy)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GOptionContext, g_option_context_free)
@@ -75,11 +77,15 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(GVariant, g_variant_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GVariantBuilder, g_variant_builder_unref)
 G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC(GVariantBuilder, g_variant_builder_clear)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GVariantIter, g_variant_iter_free)
+#if GLIB_CHECK_VERSION(2, 40, 0)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GVariantDict, g_variant_dict_unref)
 G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC(GVariantDict, g_variant_dict_clear)
+#endif
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GVariantType, g_variant_type_free)
+#if GLIB_CHECK_VERSION(2, 40, 0)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GSubprocess, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GSubprocessLauncher, g_object_unref)
+#endif
 
 /* Add GObject-based types as needed. */
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GAsyncResult, g_object_unref)
@@ -101,7 +107,9 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(GMount, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GOutputStream, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GSocket, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GSocketAddress, g_object_unref)
+#if GLIB_CHECK_VERSION(2, 36, 0)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GTask, g_object_unref)
+#endif
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GTlsCertificate, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GTlsDatabase, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GTlsInteraction, g_object_unref)

glnx-backports.h

@@ -27,6 +27,26 @@
 
 G_BEGIN_DECLS
 
+#if !GLIB_CHECK_VERSION(2, 34, 0)
+#define g_clear_pointer(pp, destroy) \
+  G_STMT_START {                                                               \
+    G_STATIC_ASSERT (sizeof *(pp) == sizeof (gpointer));                       \
+    /* Only one access, please; work around type aliasing */                   \
+    union { char *in; gpointer *out; } _pp;                                    \
+    gpointer _p;                                                               \
+    /* This assignment is needed to avoid a gcc warning */                     \
+    GDestroyNotify _destroy = (GDestroyNotify) (destroy);                      \
+                                                                               \
+    _pp.in = (char *) (pp);                                                    \
+    _p = *_pp.out;                                                             \
+    if (_p)                                                                    \
+      {                                                                        \
+        *_pp.out = NULL;                                                       \
+        _destroy (_p);                                                         \
+      }                                                                        \
+  } G_STMT_END
+#endif
+
 #if !GLIB_CHECK_VERSION(2, 44, 0)
 
 #define g_strv_contains glnx_strv_contains
@@ -43,4 +63,16 @@ gboolean              glnx_set_object  (GObject **object_ptr,
 
 #endif /* !GLIB_CHECK_VERSION(2, 44, 0) */
 
+#ifndef g_assert_nonnull
+#define g_assert_nonnull(x) g_assert (x != NULL)
+#endif
+
+#ifndef g_assert_null
+#define g_assert_null(x) g_assert (x == NULL)
+#endif
+
+#if !GLIB_CHECK_VERSION (2, 38, 0)
+#define g_test_skip(s) g_test_message ("SKIP: %s", s)
+#endif
+
 G_END_DECLS

glnx-fdio.c

@@ -37,6 +37,7 @@
 #include <glnx-errors.h>
 #include <glnx-xattrs.h>
 #include <glnx-backport-autoptr.h>
+#include <glnx-backports.h>
 #include <glnx-local-alloc.h>
 #include <glnx-missing.h>
 

tests/test-libglnx-xattrs.c

@@ -218,7 +218,11 @@ test_xattr_races (void)
   /* FIXME - this deadlocks for me on 4.9.4-201.fc25.x86_64, whether
    * using overlayfs or xfs as source/dest.
    */
+#if GLIB_CHECK_VERSION (2, 36, 0)
   const guint nprocs = MAX (4, g_get_num_processors ());
+#else
+  const guint nprocs = 4;
+#endif
   struct XattrWorker wdata[nprocs];
   GThread *threads[nprocs];
   g_autoptr(GError) local_error = NULL;