Re: [clang] stack protector and f1f029c7bf

[H. Peter Anvin]

On 05/24/18 14:12, Nick Desaulniers wrote:
> 
> Looks like those builtins got added to GCC around the 4.9 timeframe:
> https://godbolt.org/g/9VS2E9
> 
> Problematically, it seems that GCC does not have __has_builtin to do
> feature detection:
> https://clang.llvm.org/docs/LanguageExtensions.html#feature-checking-macros
> https://godbolt.org/g/oku8ux
> 

We have support in the kernel build system for doing that, though.

I just added a concurring opinion to the gcc bug report:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66970