[Bug c/120901] missing diagnostics about jump into scope after defining of a VLA struct

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120901

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---

Note with -O2 -W -Wall we do get an uninitialized variable warning even:

<source>:8:18: warning: 'argc.0' is used uninitialized [-Wuninitialized]
    8 |         struct c a;
      |                  ^
<source>:6:9: note: 'argc.0' was declared here
    6 |         };
      |         ^