[Bug target/126250] [17 Regression] ICE at -O2 during RTL pass: final

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126250

--- Comment #8 from Drea Pinski <pinskia at gcc dot gnu.org> ---
And we do warn about the uninitialized variables with -Wall:

<source>:20:5: warning: 'ov5' is used uninitialized [-Wuninitialized]
   20 |     switch (ov5)
      |     ^~~~~~
<source>:18:13: note: 'ov5' was declared here
   18 |     int16_t ov5;
      |             ^~~
<source>:28:9: warning: 'deadx22' may be used uninitialized
[-Wmaybe-uninitialized]
   28 |     g21 = deadx22;
      |     ~~~~^~~~~~~~~
<source>:19:17: note: 'deadx22' was declared here
   19 |     _BitInt(95) deadx22;
      |                 ^~~~~~~