X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fbasic%2Falloc-util.h;h=a44dd473c1106574472ae2cd84e7db7f2df935ae;hp=ceeee519b79f864ccbf359fede0c91c3364c7e36;hb=9b00a533195b7fec54a791ca02090e0799214770;hpb=5216c93baebfa4e129ea1fc6fffd2c842aaea839

diff --git a/src/basic/alloc-util.h b/src/basic/alloc-util.h
index ceeee519b..a44dd473c 100644
--- a/src/basic/alloc-util.h
+++ b/src/basic/alloc-util.h
@@ -43,6 +43,14 @@ static inline void *mfree(void *memory) {
         return NULL;
 }
 
+#define free_and_replace(a, b)                  \
+        ({                                      \
+                free(a);                        \
+                (a) = (b);                      \
+                (b) = NULL;                     \
+                0;                              \
+        })
+
 void* memdup(const void *p, size_t l) _alloc_(2);
 
 static inline void freep(void *p) {