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authorLudovic Courtès <ludo@gnu.org>2011-11-05 21:46:15 +0100
committerLudovic Courtès <ludo@gnu.org>2011-11-05 21:46:15 +0100
commit66b99a27c644f2bbfbc2feda679415ce80c77a62 (patch)
treeeddfe072b1190d721c007b732664fc5f1795054e /mach-defpager/kalloc.c
parent6d7787b87860463038da9ddf4dfa393f103091ff (diff)
mach-defpager: Declare `__malloc_initialize_hook' as volatile.
* mach-defpager/kalloc.c (__MALLOC_HOOK_VOLATILE): New macro.
Diffstat (limited to 'mach-defpager/kalloc.c')
-rw-r--r--mach-defpager/kalloc.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/mach-defpager/kalloc.c b/mach-defpager/kalloc.c
index 28c0b55e..5d91aceb 100644
--- a/mach-defpager/kalloc.c
+++ b/mach-defpager/kalloc.c
@@ -40,7 +40,13 @@ static void init_hook (void);
static void *malloc_hook (size_t size, const void *caller);
static void free_hook (void *ptr, const void *caller);
-void (*__malloc_initialize_hook) (void) = init_hook;
+/* GNU libc 2.14 defines this macro to declare hook variables as volatile.
+ Define it as empty for older libc versions. */
+#ifndef __MALLOC_HOOK_VOLATILE
+# define __MALLOC_HOOK_VOLATILE
+#endif
+
+void (*__MALLOC_HOOK_VOLATILE __malloc_initialize_hook) (void) = init_hook;
#define DEBUG