https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115112
--- Comment #2 from Gaius Mulley <gaius at gcc dot gnu.org> ---
Also seen in the assembly output:
$ gm2 -fiso -g -fm2-whole-program -S testrestline.mod
...
.L1166:
.loc 10 133 7
nop
.L1163:
.loc 10 108 11 # front end incorrectly assigns location to line 108,
it should be 134
movl -4(%rbp), %eax
addl $1, %eax
.loc 10 134 10
movl %eax, -4(%rbp)
.loc 10 136 8
jmp .L1159
