commit 24db10d8e1419f44e1d9f1d3fa2ba5fb181250c6
author Rafael Espindola <rafael.espindola@gmail.com> Wed Oct 05 16:33:03 2016 +0000
committer Rafael Espindola <rafael.espindola@gmail.com> Wed Oct 05 16:33:03 2016 +0000
tree c80cbe6fafac4e3849b5d184c60fc6a92a97529f
parent 80af0b9e3c33e6e6a8986bf58afaafdafb47b5f4

Don't pass null to memcpy. Should fix the asan bots.

llvm-svn: 283336

llvm/lib/MC/StringTableBuilder.cpp

diff --git a/llvm/lib/MC/StringTableBuilder.cpp b/llvm/lib/MC/StringTableBuilder.cpp
index 3fde526..63554fa 100644
--- a/llvm/lib/MC/StringTableBuilder.cpp
+++ b/llvm/lib/MC/StringTableBuilder.cpp
@@ -79,7 +79,8 @@
   assert(isFinalized());
   for (const StringPair &P : StringIndexMap) {
     StringRef Data = P.first.val();
-    memcpy(Buf + P.second, Data.data(), Data.size());
+    if (!Data.empty())
+      memcpy(Buf + P.second, Data.data(), Data.size());
   }
   if (K != WinCOFF)
     return;