[Bug tree-optimization/100781] [12 Regression] Emitted binary code changes when -g is enabled at -O2

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100781

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Emitted binary code changes |[12 Regression] Emitted
                   |when -g is enabled at -O2   |binary code changes when -g
                   |                            |is enabled at -O2
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-05-26
   Target Milestone|---                         |12.0

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
apinski@xeond:~/src/upstream-gcc/gcc/objdir/stage1-gcc$ ./xgcc -B.
-fcompare-debug -O2 t.c
xgcc: error: t.c: ‘-fcompare-debug’ failure (length)

This is a recent regression, it worked with 20210523.