Fix for malicious optimisation of memcpy in test suite, which causes failure with...

[adns.git] / regress / hcommon.c

diff --git a/regress/hcommon.c b/regress/hcommon.c
index ebbef9400e4d361dc96c24cbabe2dcec6d54fd33..e63a8cda57a0b30d40aefdc87c7bb5f46ef64e06 100644 (file)
--- a/regress/hcommon.c
+++ b/regress/hcommon.c
@@ -281,7 +281,7 @@ void *Hrealloc(void *op, size_t nsz) {
   size_t osz;
   if (op) { oldnode= (void*)((char*)op - MALLOCHSZ); osz= oldnode->sz; } else { osz= 0; }
   np= Hmalloc(nsz);
-  memcpy(np,op, osz>nsz ? nsz : osz);
+  if (osz) memcpy(np,op, osz>nsz ? nsz : osz);
   Hfree(op);
   return np;
 }