[llvm] r283336 - Don't pass null to memcpy. Should fix the asan bots.

[Rafael Espindola via llvm-commits]

Author: rafael
Date: Wed Oct  5 11:33:03 2016
New Revision: 283336

URL: http://llvm.org/viewvc/llvm-project?rev=283336&view=rev
Log:
Don't pass null to memcpy. Should fix the asan bots.

Modified:
    llvm/trunk/lib/MC/StringTableBuilder.cpp

Modified: llvm/trunk/lib/MC/StringTableBuilder.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/StringTableBuilder.cpp?rev=283336&r1=283335&r2=283336&view=diff
==============================================================================
--- llvm/trunk/lib/MC/StringTableBuilder.cpp (original)
+++ llvm/trunk/lib/MC/StringTableBuilder.cpp Wed Oct  5 11:33:03 2016
@@ -79,7 +79,8 @@ void StringTableBuilder::write(uint8_t *
   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;