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Only allow direct CVarArg usage in c_va_start

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misomosi committed 2026-06-30 14:18:54 -04:00
1 parent e276ce552b
commit c7cd4b9e95
3 files changed
+11
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src/check_expr.cpp
+8
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@@ -1968,6 +1968,14 @@ gb_internal Entity *check_ident(CheckerContext *c, Operand *o, Ast *n, Type *nam
break;
case Entity_Variable:
if ((e->flags & EntityFlag_CVarArg) && !c->allow_c_vararg_param) {
ERROR_BLOCK();
error(o->expr, "'#c_vararg' parameter '%.*s' cannot be used directly", LIT(name));
error_line("\tSuggestion: use c_va_start to convert C varargs to c_va_list\n");
o->mode = Addressing_Invalid;
o->type = t_invalid;
return e;
}
e->flags |= EntityFlag_Used;
if (type == t_invalid) {
o->type = t_invalid;