diff options
| -rw-r--r-- | compiler-rt/lib/sanitizer_common/sanitizer_win.cc | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_win.cc b/compiler-rt/lib/sanitizer_common/sanitizer_win.cc index c4a57f0870c..b39de634217 100644 --- a/compiler-rt/lib/sanitizer_common/sanitizer_win.cc +++ b/compiler-rt/lib/sanitizer_common/sanitizer_win.cc @@ -31,6 +31,20 @@ #include "sanitizer_stacktrace.h" #include "sanitizer_symbolizer.h" +// A macro to tell the compiler that this part of the code cannot be reached, +// if the compiler supports this feature. Since we're using this in +// code that is called when terminating the process, the expansion of the +// macro should not terminate the process to avoid infinite recursion. +#if defined(__clang__) +# define BUILTIN_UNREACHABLE() __builtin_unreachable() +#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)) +# define BUILTIN_UNREACHABLE() __builtin_unreachable() +#elif defined(_MSC_VER) +# define BUILTIN_UNREACHABLE() __assume(0) +#else +# define BUILTIN_UNREACHABLE() +#endif + namespace __sanitizer { #include "sanitizer_syscall_generic.inc" @@ -659,7 +673,7 @@ void internal__exit(int exitcode) { if (::IsDebuggerPresent()) __debugbreak(); TerminateProcess(GetCurrentProcess(), exitcode); - __assume(0); + BUILTIN_UNREACHABLE(); } uptr internal_ftruncate(fd_t fd, uptr size) { |
