Adding fuzzer flags support to OpenBSD driver

[devnexen]

Summary

• Following-up the sanitizer's part commit https://reviews.llvm.org/rCRT329631, we enable fuzzer flags.

[devnexen]

ping

[devnexen]

ping

[devnexen]

the sanitizer part had been accepted https://reviews.llvm.org/D44877

[dberris]

LGTM

[devnexen]

Thanks ! anybody who can land it for me I ll be grateful.

[dberris]

In the interest of better documentation, can you please update the description of this change to reflect what we're trying to achieve here?

Something more descriptive than "libFuzzer OpenBSD Support" that substantiates the change, along with related changes to other projects (sanitizers in particular), would be really nice.

[devnexen]

Hope it s good enough now :-)

[dberris]

ACK -- let me land now. :)

lib/Driver/ToolChains/OpenBSD.cpp

 
 SanitizerMask OpenBSD::getSupportedSanitizers() const {
   const bool IsX86 = getTriple().getArch() == llvm::Triple::x86;
   const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
 
   // For future use, only UBsan at the moment
   SanitizerMask Res = ToolChain::getSupportedSanitizers();
 
-  if (IsX86 || IsX86_64)
+  if (IsX86 || IsX86_64) {
     Res |= SanitizerKind::Vptr;
+    Res |= SanitizerKind::Fuzzer;
+    Res |= SanitizerKind::FuzzerNoLink;
+  }
 
   return Res;
 }
 
 /// OpenBSD - OpenBSD tool chain which can call as(1) and ld(1) directly.
 
 OpenBSD::OpenBSD(const Driver &D, const llvm::Triple &Triple,
                  const ArgList &Args)