[Bug sanitizer/112912] How to implement a mangle interface in c for generating cfi type id

[mark_wang1234 at 163 dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112912

--- Comment #2 from Wang <mark_wang1234 at 163 dot com> ---
(In reply to Andrew Pinski from comment #1)
> I don't get why you need to mangle anything here ....
> 
> what exactly is being mangled here? The types? or something else?

Sorry I didn't describe it clearly. I just need mangle the function type