leak-detective: remove hdr entry when reallocating zero bytes

diff --git a/src/libstrongswan/utils/leak_detective.c b/src/libstrongswan/utils/leak_detective.c
index 674445bd26460d2d61abf97af3088614211c2087..ffbc6208569024672069f23d08b13bd42d8efb83 100644 (file)
--- a/src/libstrongswan/utils/leak_detective.c
+++ b/src/libstrongswan/utils/leak_detective.c
@@ -872,6 +872,12 @@ HOOK(void*, realloc, void *old, size_t bytes)
        {
                return malloc(bytes);
        }
+       /* handle zero size as a free() */
+       if (bytes == 0)
+       {
+               free(old);
+               return NULL;
+       }
 
        hdr = old - sizeof(memory_header_t);
        tail = old + hdr->bytes;