X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmalloc%2Fmalloc_usable_size.c;h=672b518ad0ef15d9b3ad19a0538c6490aa88ca63;hb=f9895817321790bef33a56e3b10f3f71d989c23e;hp=8cccd9d8d68b2e4fc6a230a7e9f0537a60c2353a;hpb=8d998a7b3b741304df860b5dc843826257633237;p=musl

diff --git a/src/malloc/malloc_usable_size.c b/src/malloc/malloc_usable_size.c
index 8cccd9d8..672b518a 100644
--- a/src/malloc/malloc_usable_size.c
+++ b/src/malloc/malloc_usable_size.c
@@ -1,17 +1,9 @@
 #include <malloc.h>
-
-void *(*const __realloc_dep)(void *, size_t) = realloc;
-
-struct chunk {
-	size_t psize, csize;
-	struct chunk *next, *prev;
-};
-
-#define OVERHEAD (2*sizeof(size_t))
-#define CHUNK_SIZE(c) ((c)->csize & -2)
-#define MEM_TO_CHUNK(p) (struct chunk *)((char *)(p) - OVERHEAD)
+#include "malloc_impl.h"
+ 
+hidden void *(*const __realloc_dep)(void *, size_t) = realloc;
 
 size_t malloc_usable_size(void *p)
 {
-	return CHUNK_SIZE(MEM_TO_CHUNK(p)) - OVERHEAD;
+	return p ? CHUNK_SIZE(MEM_TO_CHUNK(p)) - OVERHEAD : 0;
 }