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Fix misue of iterator pointing to erased object. Uncovered by

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_GLIBCXX_DEBUG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37793 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Greene
2007-06-29 02:45:24 +00:00
parent 6c631988c7
commit 8a46d342d8
3 changed files with 10 additions and 9 deletions
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lib/CodeGen/MachineBasicBlock.cpp
+3 -3
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@@ -176,10 +176,10 @@ void MachineBasicBlock::removeSuccessor(MachineBasicBlock *succ) {
Successors.erase(I);
}
void MachineBasicBlock::removeSuccessor(succ_iterator I) {
MachineBasicBlock::succ_iterator MachineBasicBlock::removeSuccessor(succ_iterator I) {
assert(I != Successors.end() && "Not a current successor!");
(*I)->removePredecessor(this);
Successors.erase(I);
return(Successors.erase(I));
}
void MachineBasicBlock::addPredecessor(MachineBasicBlock *pred) {
@@ -273,7 +273,7 @@ bool MachineBasicBlock::CorrectExtraCFGEdges(MachineBasicBlock *DestA,
++SI;
} else {
// Otherwise, this is a superfluous edge, remove it.
removeSuccessor(SI);
SI = removeSuccessor(SI);
MadeChange = true;
}
}