[llvm-commits] [llvm] r68090 - /llvm/branches/Apple/Dib/lib/Analysis/AliasSetTracker.cpp

[Bill Wendling]

Author: void
Date: Tue Mar 31 03:01:04 2009
New Revision: 68090

URL: http://llvm.org/viewvc/llvm-project?rev=68090&view=rev
Log:
--- Merging (from foreign repository) r68047 into '.':
U    lib/Analysis/AliasSetTracker.cpp

getEntryFor() may invalidate DenseMap iterator.
Walking an invalidated iterator is not a good idea.

Modified:
    llvm/branches/Apple/Dib/lib/Analysis/AliasSetTracker.cpp

Modified: llvm/branches/Apple/Dib/lib/Analysis/AliasSetTracker.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/Apple/Dib/lib/Analysis/AliasSetTracker.cpp?rev=68090&r1=68089&r2=68090&view=diff

==============================================================================
--- llvm/branches/Apple/Dib/lib/Analysis/AliasSetTracker.cpp (original)
+++ llvm/branches/Apple/Dib/lib/Analysis/AliasSetTracker.cpp Tue Mar 31 03:01:04 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);
 }