include: Add declarations of _alloca and alloca for MSVC mode.

This fixes builds with recent Clang 15 (which still is in development), which errors out on implicit declarations. Signed-off-by: Martin Storsjö <martin@martin.st> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

include: Add declarations of _alloca and alloca for MSVC mode.
8f8b802e · Martin Storsjö · Alexandre Julliard · 55177136 · 8f8b802e
Commit 8f8b802e authored Apr 25, 2022 by Martin Storsjö Committed by Alexandre Julliard Apr 25, 2022
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malloc.h include/msvcrt/malloc.h +6 -0

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--- 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 */