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[asan] report an error if blacklist file contains a malformed regex. fixes asan issue 17

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146503 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kostya Serebryany 2011-12-13 19:34:53 +00:00
parent 8a9bce978f
commit 085cb8f0b9
1 changed files with 13 additions and 5 deletions
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18
lib/Transforms/Instrumentation/AddressSanitizer.cpp
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@ -979,15 +979,23 @@ BlackList::BlackList(const std::string &Path) {
for (size_t i = 0, numLines = Lines.size(); i < numLines; i++) {
if (Lines[i].startswith(kFunPrefix)) {
std::string ThisFunc = Lines[i].substr(strlen(kFunPrefix));
if (Fun.size()) {
Fun += "|";
}
std::string ThisFuncRE;
// add ThisFunc replacing * with .*
for (size_t j = 0, n = ThisFunc.size(); j < n; j++) {
if (ThisFunc[j] == '*')
Fun += '.';
Fun += ThisFunc[j];
ThisFuncRE += '.';
ThisFuncRE += ThisFunc[j];
}
// Check that the regexp is valid.
Regex CheckRE(ThisFuncRE);
std::string Error;
if (!CheckRE.isValid(Error))
report_fatal_error("malformed blacklist regex: " + ThisFunc +
": " + Error);
// Append to the final regexp.
if (Fun.size())
Fun += "|";
Fun += ThisFuncRE;
}
}
if (Fun.size()) {