[llvm] r241345 - Avoid a use after free.

[Rafael Espindola]

Author: rafael
Date: Fri Jul  3 07:20:34 2015
New Revision: 241345

URL: http://llvm.org/viewvc/llvm-project?rev=241345&view=rev
Log:
Avoid a use after free.

Modified:
    llvm/trunk/lib/Bitcode/Reader/BitcodeReader.cpp

Modified: llvm/trunk/lib/Bitcode/Reader/BitcodeReader.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Bitcode/Reader/BitcodeReader.cpp?rev=241345&r1=241344&r2=241345&view=diff
==============================================================================
--- llvm/trunk/lib/Bitcode/Reader/BitcodeReader.cpp (original)
+++ llvm/trunk/lib/Bitcode/Reader/BitcodeReader.cpp Fri Jul  3 07:20:34 2015
@@ -4459,7 +4459,10 @@ std::error_code BitcodeReader::materiali
   // Upgrade any old intrinsic calls in the function.
   for (auto &I : UpgradedIntrinsics) {
     if (I.first != I.second) {
-      for (auto *U : I.first->users()) {
+      for (auto UI = I.first->user_begin(), UE = I.first->user_end();
+           UI != UE;) {
+        User *U = *UI;
+        ++UI;
         if (CallInst *CI = dyn_cast<CallInst>(U))
           UpgradeIntrinsicCall(CI, I.second);
       }