[PATCH] include: Add declarations of _alloca and alloca for MSVC mode
Martin Storsjö
martin at martin.st
Mon Apr 25 03:46:39 CDT 2022
This fixes builds with recent Clang 15 (which still is in development),
which errors out on implicit declarations.
Signed-off-by: Martin Storsjö <martin at martin.st>
---
Doing this as two separate ifdef blocks, to get the plain C
function declaration (which actually is a builtin intrinsic, but
it needs to be declared) within the extern "C" scope.
---
include/msvcrt/malloc.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/include/msvcrt/malloc.h b/include/msvcrt/malloc.h
index 5bb843be5a6..fcbadbeb4e0 100644
--- a/include/msvcrt/malloc.h
+++ b/include/msvcrt/malloc.h
@@ -77,6 +77,10 @@ _ACRTIMP void* __cdecl _aligned_offset_realloc(void*,size_t,size_t,size_t);
_ACRTIMP size_t __cdecl _get_sbh_threshold(void);
_ACRTIMP int __cdecl _set_sbh_threshold(size_t size);
+#ifdef _MSC_VER
+void *_alloca(size_t size);
+#endif
+
#ifdef __cplusplus
}
#endif
@@ -84,6 +88,8 @@ _ACRTIMP int __cdecl _set_sbh_threshold(size_t size);
# ifdef __GNUC__
# define _alloca(x) __builtin_alloca((x))
# define alloca(x) __builtin_alloca((x))
+# elif defined(_MSC_VER)
+# define alloca(x) _alloca((x))
# endif
#endif /* __WINE_MALLOC_H */
--
2.25.1
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