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[libFuzzer] use raw C IO to reduce the risk of a deadlock in a signal handler.
author
Kostya Serebryany
<kcc@google.com>
Wed, 12 Aug 2015 00:55:09 +0000
(
00:55
+0000)
committer
Kostya Serebryany
<kcc@google.com>
Wed, 12 Aug 2015 00:55:09 +0000
(
00:55
+0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244707
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/Fuzzer/FuzzerIO.cpp
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diff --git
a/lib/Fuzzer/FuzzerIO.cpp
b/lib/Fuzzer/FuzzerIO.cpp
index 1d25389770fa27f38735fad7894d2189e494fa72..f0295e9a730875aa545c50fb361bf6879631d554 100644
(file)
--- a/
lib/Fuzzer/FuzzerIO.cpp
+++ b/
lib/Fuzzer/FuzzerIO.cpp
@@
-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,