From: Duncan Sands <baldrick@free.fr>
Date: Mon, 7 Mar 2011 19:38:38 +0000 (+0000)
Subject: Often GCC can see that NumBuckets is zero here, resulting in a warning
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e54f64899fbaaa95fc3241236aabfaa37003a658;p=oota-llvm.git

Often GCC can see that NumBuckets is zero here, resulting in a warning
about possibly swapped memset parameters.  Avoid the warning.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127170 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/ADT/DenseMap.h b/include/llvm/ADT/DenseMap.h
index dd341c6a751..9d2b11d6b2b 100644
--- a/include/llvm/ADT/DenseMap.h
+++ b/include/llvm/ADT/DenseMap.h
@@ -72,7 +72,8 @@ public:
       P->first.~KeyT();
     }
 #ifndef NDEBUG
-    memset(Buckets, 0x5a, sizeof(BucketT)*NumBuckets);
+    if (NumBuckets)
+      memset(Buckets, 0x5a, sizeof(BucketT)*NumBuckets);
 #endif
     operator delete(Buckets);
   }