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[libFuzzer] use raw C IO to reduce the risk of a deadlock in a signal handler. 

llvm-svn: 244707
This commit is contained in:
Kostya Serebryany 2015-08-12 00:55:09 +00:00
parent 592b2cc246
commit ac25eeba76
1 changed files with 5 additions and 2 deletions
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7
llvm/lib/Fuzzer/FuzzerIO.cpp
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@ -66,8 +66,11 @@ void CopyFileToErr(const std::string &Path) {
}
void WriteToFile(const Unit &U, const std::string &Path) {
std::ofstream OF(Path);
OF.write((const char*)U.data(), U.size());
// Use raw C interface because this function may be called from a sig handler.
FILE *Out = fopen(Path.c_str(), "w");
if (!Out) return;
fwrite(U.data(), sizeof(U[0]), U.size(), Out);
fclose(Out);
}
void ReadDirToVectorOfUnits(const char *Path, std::vector<Unit> *V,