[Bug sanitizer/61547] Invalid sanitization of trailing byte in __builtin_strlen

[kcc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61547

--- Comment #4 from Kostya Serebryany <kcc at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> (In reply to Kostya Serebryany from comment #2)
> > Note that in clang we chose not to instrument any builtins in compiler, 
> > but instead fully rely on interceptors.
> 
> So you never expand such builtins inline?

Not that I know of. 
LLVM has only 3 builtins like this (memset/memcpy/memmove):
http://llvm.org/docs/LangRef.html#standard-c-library-intrinsics
And asan replaces these builtins with asan's own call (e.g. __asan_memset)