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[ADT] Increment epoch from DenseMap::swap.

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Swapping DenseMap A with DenseMap B invalidates iterators pointing into
both A and B.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233890 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjoy Das
2015-04-02 04:58:12 +00:00
parent b7589c8b1b
commit a5b863c29b
1 changed files with 2 additions and 0 deletions
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2
include/llvm/ADT/DenseMap.h
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@@ -584,6 +584,8 @@ public:
} }
void swap(DenseMap& RHS) { void swap(DenseMap& RHS) {
this->incrementEpoch();
RHS.incrementEpoch();
std::swap(Buckets, RHS.Buckets); std::swap(Buckets, RHS.Buckets);
std::swap(NumEntries, RHS.NumEntries); std::swap(NumEntries, RHS.NumEntries);
std::swap(NumTombstones, RHS.NumTombstones); std::swap(NumTombstones, RHS.NumTombstones);