tree e97e94acd8098038229e0ccccb410352c93a941f
parent 4390383b32250a941ec616e8bff6f568a801b1c0
author Rich Felker <dalias@aerifal.cx> 1539829731 -0400
committer Rich Felker <dalias@aerifal.cx> 1539829731 -0400

document and make explicit desired noinline property for __init_libc

on multiple occasions I've started to flatten/inline the code in
__init_libc, only to rediscover the reason it was not inlined: GCC
fails to deallocate its stack (and now, with the changes in commit
4390383b32250a941ec616e8bff6f568a801b1c0, fails to produce a tail call
to the stage 2 function; see PR #87639) before calling main if it was
inlined.

document this with a comment and use an explicit noinline attribute if
__GNUC__ is defined so that even with CFLAGS that heavily favor
inlining it won't get inlined.