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-rw-r--r--src/common/util.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/common/util.h b/src/common/util.h
index 9ed11260dc..e85be57c07 100644
--- a/src/common/util.h
+++ b/src/common/util.h
@@ -80,12 +80,22 @@ extern int dmalloc_free(const char *file, const int line, void *pnt,
* This is a macro. If you need a function pointer to release memory from
* tor_malloc(), use tor_free_().
*/
+#ifdef __GNUC__
+#define tor_free(p) STMT_BEGIN \
+ typeof(&(p)) tor_free__tmpvar = &(p); \
+ if (PREDICT_LIKELY((*tor_free__tmpvar)!=NULL)) { \
+ raw_free(*tor_free__tmpvar); \
+ *tor_free__tmpvar=NULL; \
+ } \
+ STMT_END
+#else
#define tor_free(p) STMT_BEGIN \
if (PREDICT_LIKELY((p)!=NULL)) { \
raw_free(p); \
(p)=NULL; \
} \
STMT_END
+#endif
#endif /* defined(USE_DMALLOC) */
#define tor_malloc(size) tor_malloc_(size DMALLOC_ARGS)