[compiler-rt] r259741 - [asan] When catching a signal caused by a memory access, print if it's a READ or a WRITE. This touches win/mac files which I have not tested, if a win/mac bot fails I'll try to quick-fix

[Roman Divacky via llvm-commits]

> Index: projects/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
> ===================================================================
> --- projects/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc        (revision 260009)
> +++ projects/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc        (working copy)
> @@ -1158,7 +1158,11 @@
>  bool GetSigContextWriteFlag(void *context) {
>  #if defined(__x86_64__) || defined(__i386__)
>    ucontext_t *ucontext = (ucontext_t*)context;
> +#if SANITIZER_FREEBSD
> +  return ucontext->uc_mcontext.mc_err & 2;
> +#else
>    return ucontext->uc_mcontext.gregs[REG_ERR] & 2;
> +#endif
>  #else
>    return false;  // FIXME: Implement.
>  #endif

This looks correct to me.