https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36887
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Simplified testcase:
#pragma GCC poison a
int a;
GCC outputs:
<source>:2:5: error: attempt to use poisoned "a"
2 | int a;
| ^
But not the location of the #pragma which would be useful to debug why it was
poisoned.
