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Fixed undefined behavior in pushMappings when the stack has to resize.

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llvm-svn: 84924
This commit is contained in:
John Thompson 2009-10-23 02:21:17 +00:00
parent 9bb0059449
commit d73d7add37
1 changed files with 2 additions and 0 deletions
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2
clang/lib/Basic/Diagnostic.cpp
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@ -230,6 +230,8 @@ Diagnostic::~Diagnostic() {
void Diagnostic::pushMappings() {
// Avoids undefined behavior when the stack has to resize.
DiagMappingsStack.reserve(DiagMappingsStack.size() + 1);
DiagMappingsStack.push_back(DiagMappingsStack.back());
}