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| author | Chris Lattner <sabre@nondot.org> | 2007-04-14 18:06:52 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2007-04-14 18:06:52 +0000 |
| commit | ae143ceb83e4247a59315304163d886faf7331b0 (patch) | |
| tree | 5271706d28f5e33cf7b805598109d74b4bbcc900 /lib/Transforms/IPO/ConstantMerge.cpp | |
| parent | 70718366d995747977a048a311e388f820333cd7 (diff) | |
| download | llvm-ae143ceb83e4247a59315304163d886faf7331b0.tar.gz llvm-ae143ceb83e4247a59315304163d886faf7331b0.tar.bz2 llvm-ae143ceb83e4247a59315304163d886faf7331b0.tar.xz | |
avoid iterator invalidation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36002 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/IPO/ConstantMerge.cpp')
| -rw-r--r-- | lib/Transforms/IPO/ConstantMerge.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Transforms/IPO/ConstantMerge.cpp b/lib/Transforms/IPO/ConstantMerge.cpp index 0f949a4743..400b5e2031 100644 --- a/lib/Transforms/IPO/ConstantMerge.cpp +++ b/lib/Transforms/IPO/ConstantMerge.cpp @@ -60,8 +60,10 @@ bool ConstantMerge::runOnModule(Module &M) { // because doing so may cause initializers of other globals to be rewritten, // invalidating the Constant* pointers in CMap. // - for (Module::global_iterator GV = M.global_begin(), E = M.global_end(); - GV != E; ++GV) { + for (Module::global_iterator GVI = M.global_begin(), E = M.global_end(); + GVI != E; ) { + GlobalVariable *GV = GVI++; + // If this GV is dead, remove it. GV->removeDeadConstantUsers(); if (GV->use_empty() && GV->hasInternalLinkage()) { |