diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Fuzzer/FuzzerDriver.cpp | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/llvm/lib/Fuzzer/FuzzerDriver.cpp b/llvm/lib/Fuzzer/FuzzerDriver.cpp index 66e46dbf3aa..eaa308cac72 100644 --- a/llvm/lib/Fuzzer/FuzzerDriver.cpp +++ b/llvm/lib/Fuzzer/FuzzerDriver.cpp @@ -23,6 +23,10 @@ #include <algorithm> #include <iterator> +// This function should be present in the libFuzzer so that the client +// binary can test for its existence. +extern "C" __attribute__((used)) void __libfuzzer_is_present() {} + namespace fuzzer { // Program arguments. @@ -93,6 +97,18 @@ static const char *FlagValue(const char *Param, const char *Name) { return nullptr; } +// Avoid calling stol as it triggers a bug in clang/glibc build. +static long MyStol(const char *Str) { + long Res = 0; + for (size_t i = 0; Str[i]; i++) { + char Ch = Str[i]; + if (Ch < '0' || Ch > '9') + return Res; + Res = Res * 10 + (Ch - '0'); + } + return Res; +} + static bool ParseOneFlag(const char *Param) { if (Param[0] != '-') return false; if (Param[1] == '-') { @@ -108,7 +124,7 @@ static bool ParseOneFlag(const char *Param) { const char *Str = FlagValue(Param, Name); if (Str) { if (FlagDescriptions[F].IntFlag) { - int Val = std::stol(Str); + int Val = MyStol(Str); *FlagDescriptions[F].IntFlag = Val; if (Flags.verbosity >= 2) Printf("Flag: %s %d\n", Name, Val);; |
