[Bug debug/116156] New: [14/15 regression] -fcompare-debug -gno-statement-frontiers failure with -O2 when building gdk-pixbuf

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116156

            Bug ID: 116156
           Summary: [14/15 regression] -fcompare-debug
                    -gno-statement-frontiers failure with -O2 when
                    building gdk-pixbuf
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: debug
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sjames at gcc dot gnu.org
  Target Milestone: ---

Created attachment 58779
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58779&action=edit
io-jpeg.c.i.xz

Let's try again with -fcompare-debug en-masse, this time with
-gno-statement-frontiers. Tips welcome on these in general. Begging to not file
these en-masse also tolerated.

```
$ gcc-14 -c io-jpeg.c.i -fcompare-debug -O2 -gno-statement-frontiers
gcc-14: error: io-jpeg.c.i: ‘-fcompare-debug’ failure (length)

$ gcc-15 -c io-jpeg.c.i -fcompare-debug -O2 -gno-statement-frontiers
gcc-15: error: io-jpeg.c.i: ‘-fcompare-debug’ failure (length)

$ gcc-15 -c io-jpeg.c.i -fcompare-debug -O3 -gno-statement-frontiers
gcc-15: error: io-jpeg.c.i: ‘-fcompare-debug’ failure
```

(I don't know what the '(length)' significance is.)