[llvm-commits] [llvm] r68047 - /llvm/trunk/lib/Analysis/AliasSetTracker.cpp

[Devang Patel]

Author: dpatel
Date: Mon Mar 30 13:34:47 2009
New Revision: 68047

URL: http://llvm.org/viewvc/llvm-project?rev=68047&view=rev
Log:
getEntryFor() may invalidate DenseMap iterator.
Walking an invalidated iterator is not a good idea.

Modified:
    llvm/trunk/lib/Analysis/AliasSetTracker.cpp

Modified: llvm/trunk/lib/Analysis/AliasSetTracker.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/AliasSetTracker.cpp?rev=68047&r1=68046&r2=68047&view=diff

==============================================================================
--- llvm/trunk/lib/Analysis/AliasSetTracker.cpp (original)
+++ llvm/trunk/lib/Analysis/AliasSetTracker.cpp Mon Mar 30 13:34:47 2009
@@ -520,6 +520,7 @@
   if (Entry.hasAliasSet()) return;    // Already in the tracker!
 
   // Add it to the alias set it aliases...
+  I = PointerMap.find(From);
   AliasSet *AS = I->second->getAliasSet(*this);
   AS->addPointer(*this, Entry, I->second->getSize(), true);
 }