Darwin: add support for setting errno from alloc wrappers

diff --git a/coregrind/m_replacemalloc/vg_replace_malloc.c b/coregrind/m_replacemalloc/vg_replace_malloc.c
index 5977fa317b698437efa092173f822e1417249942..64d9b67c1eef8053a5dfce363e52cadad6a0951a 100644 (file)
--- a/coregrind/m_replacemalloc/vg_replace_malloc.c
+++ b/coregrind/m_replacemalloc/vg_replace_malloc.c
@@ -234,6 +234,13 @@ extern int *___errno (void) __attribute__((weak));
       (*___errno ()) = VKI_ENOMEM;
 #define SET_ERRNO_EINVAL if (___errno)        \
       (*___errno ()) = VKI_EINVAL;
+#elif defined(VGO_darwin)
+extern int * __error(void) __attribute__((weak));
+#define SET_ERRNO_ENOMEM if (__error)        \
+      (*__error ()) = VKI_ENOMEM;
+#define SET_ERRNO_EINVAL if (__error)        \
+      (*__error ()) = VKI_EINVAL;
+
 #else
 #define SET_ERRNO_ENOMEM {}
 #define SET_ERRNO_EINVAL {}