[llvm-commits] [llvm] r158582 - /llvm/trunk/lib/Support/Unix/Signals.inc
Chandler Carruth
chandlerc at gmail.com
Fri Jun 15 17:44:07 PDT 2012
Author: chandlerc
Date: Fri Jun 15 19:44:07 2012
New Revision: 158582
URL: http://llvm.org/viewvc/llvm-project?rev=158582&view=rev
Log:
Don't call 'FilesToRemove[0]' when the vector is empty, even to compute
the address of it. Found by a checking STL implementation used on
a dragonegg builder. Sorry about this one. =/
Modified:
llvm/trunk/lib/Support/Unix/Signals.inc
Modified: llvm/trunk/lib/Support/Unix/Signals.inc
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/Unix/Signals.inc?rev=158582&r1=158581&r2=158582&view=diff
==============================================================================
--- llvm/trunk/lib/Support/Unix/Signals.inc (original)
+++ llvm/trunk/lib/Support/Unix/Signals.inc Fri Jun 15 19:44:07 2012
@@ -189,7 +189,7 @@
bool llvm::sys::RemoveFileOnSignal(const sys::Path &Filename,
std::string* ErrMsg) {
SignalsMutex.acquire();
- std::string *OldPtr = &FilesToRemove[0];
+ std::string *OldPtr = FilesToRemove.empty() ? 0 : &FilesToRemove[0];
FilesToRemove.push_back(Filename.str());
// We want to call 'c_str()' on every std::string in this vector so that if
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