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Fully apply David Blaikie suggestion and add comment explaining why.

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llvm-svn: 244461
This commit is contained in:
Yaron Keren 2015-08-10 16:53:30 +00:00
parent c0b2c539ba
commit ea9a1cc024
1 changed files with 3 additions and 1 deletions
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4
tools/dsymutil/DwarfLinker.cpp
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@ -2884,8 +2884,10 @@ void DwarfLinker::patchLineTableForUnit(CompileUnit &Unit,
if (StopAddress != -1ULL && !Seq.empty()) {
// Insert end sequence row with the computed end address, but
// the same line as the previous one.
// Do not collapse the next two statements as the push_back operation
// may reallocate the vector and invalidate the iterator Seq.back().
auto NextLine = Seq.back();
Seq.emplace_back(NextLine);
Seq.push_back(NextLine);
Seq.back().Address = StopAddress;
Seq.back().EndSequence = 1;
Seq.back().PrologueEnd = 0;