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[asan] report an error if blacklist file contains a malformed regex. fixes asan issue 17
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146503 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -979,15 +979,23 @@ BlackList::BlackList(const std::string &Path) {
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for (size_t i = 0, numLines = Lines.size(); i < numLines; i++) {
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if (Lines[i].startswith(kFunPrefix)) {
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std::string ThisFunc = Lines[i].substr(strlen(kFunPrefix));
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if (Fun.size()) {
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Fun += "|";
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}
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std::string ThisFuncRE;
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// add ThisFunc replacing * with .*
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for (size_t j = 0, n = ThisFunc.size(); j < n; j++) {
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if (ThisFunc[j] == '*')
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Fun += '.';
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Fun += ThisFunc[j];
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ThisFuncRE += '.';
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ThisFuncRE += ThisFunc[j];
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}
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// Check that the regexp is valid.
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Regex CheckRE(ThisFuncRE);
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std::string Error;
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if (!CheckRE.isValid(Error))
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report_fatal_error("malformed blacklist regex: " + ThisFunc +
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": " + Error);
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// Append to the final regexp.
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if (Fun.size())
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Fun += "|";
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Fun += ThisFuncRE;
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}
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}
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if (Fun.size()) {
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