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ScalarEvolution: added tmp to avoid use-after-dtor in for loop.

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Summary:
For loop destroyed current instance before invoking next.
Temporary variable added to prevent use-after-dtor when invoke
destructor on current instance.

Reviewers: eugenis

Subscribers: llvm-commits, sanjoy

Differential Revision: http://reviews.llvm.org/D12912

Rename temp var.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247867 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Naomi Musgrave 2015-09-16 23:46:40 +00:00
parent 9b7b412516
commit c6b5fe6ee7
1 changed files with 5 additions and 2 deletions
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7
lib/Analysis/ScalarEvolution.cpp
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@ -8394,8 +8394,11 @@ ScalarEvolution::ScalarEvolution(ScalarEvolution &&Arg)
ScalarEvolution::~ScalarEvolution() {
// Iterate through all the SCEVUnknown instances and call their
// destructors, so that they release their references to their values.
for (SCEVUnknown *U = FirstUnknown; U; U = U->Next)
U->~SCEVUnknown();
for (SCEVUnknown *U = FirstUnknown; U;) {
SCEVUnknown *Tmp = U;
U = U->Next;
Tmp->~SCEVUnknown();
}
FirstUnknown = nullptr;
ValueExprMap.clear();