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[CSSPGO] Fix an access violation due to invalided std::vector pointer invalidation. 

std::vector pointers can be invalided while growing. Using std::list instead.
This commit is contained in:
Hongtao Yu 2021-09-01 10:19:39 -07:00
parent a86bbe1e31
commit dde162d8a5
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/Transforms/IPO/SampleContextTracker.cpp
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@ -479,7 +479,7 @@ ContextTrieNode *SampleContextTracker::getContextFor(const DILocation *DIL) {
// Convert real function names to MD5 names, if the input profile is
// MD5-based.
std::vector<std::string> MD5Names;
std::list<std::string> MD5Names;
if (FunctionSamples::UseMD5) {
for (auto &Location : S) {
MD5Names.emplace_back();
@ -492,7 +492,7 @@ ContextTrieNode *SampleContextTracker::getContextFor(const DILocation *DIL) {
int I = S.size();
while (--I >= 0 && ContextNode) {
LineLocation &CallSite = S[I].first;
StringRef &CalleeName = S[I].second;
StringRef CalleeName = S[I].second;
ContextNode = ContextNode->getChildContext(CallSite, CalleeName);
}