jroelofs added inline comments.
================
Comment at: include/clang/Basic/Builtins.def:480
BUILTIN(__builtin_thread_pointer, "v*", "nc")
+BUILTIN(__builtin_launder, "v*v*", "nt")
----------------
EricWF wrote:
> jroelofs wrote:
> > GCC's is type-generic:
> >
> > ```
> > #include <type_traits>
> >
> > bool is_type_generic() {
> > int v;
> > return std::is_same<decltype(__builtin_launder(&v)),
> > decltype(&v)>::value;
> > }
> > ```
> >
> > However this `BUILTIN` line says that this one is not (yeah, I see it's
> > being fixed up in Sema later in this patch). I think you need to use custom
> > type checking here via `t`.
> The `t` is specified. It's in the third argument.
ohhh. duh. sorry.
https://reviews.llvm.org/D40218
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