[Bug c/117311] Documentation request: __builtin_frame_address(0) and inline assembly

[hpa at zytor dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117311

--- Comment #4 from H. Peter Anvin <hpa at zytor dot com> ---
Again, any recommendations for a construct (current or future) that *can* be
relied upon?