[Bug tree-optimization/90020] [7/8 regression] -O2 -Os x86-64 wrong code generated for GNU Emacs

[rguenther at suse dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90020

--- Comment #15 from rguenther at suse dot de <rguenther at suse dot de> ---
On Sat, 13 Apr 2019, dominiq at lps dot ens.fr wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90020
> 
> --- Comment #14 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> The test gcc.dg/torture/pr90020.c fails on darwin:
> 
> Undefined symbols for architecture x86_64:
>   "_x", referenced from:
>       _main in ccemobuO.o
> ld: symbol(s) not found for architecture x86_64
> collect2: error: ld returned 1 exit status

/* { dg-require-weak "" } */

was supposed to make it UNSUPPORTED on targets where it doesn't work.