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-rw-r--r--malloc/malloc-debug.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/malloc/malloc-debug.c b/malloc/malloc-debug.c
index 34523b0cc3..9922ef5f25 100644
--- a/malloc/malloc-debug.c
+++ b/malloc/malloc-debug.c
@@ -399,6 +399,8 @@ strong_alias (__debug_calloc, calloc)
size_t
malloc_usable_size (void *mem)
{
+ if (__is_malloc_debug_enabled (MALLOC_MCHECK_HOOK))
+ return mcheck_usable_size (mem);
if (__is_malloc_debug_enabled (MALLOC_CHECK_HOOK))
return malloc_check_get_size (mem);