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From: "sam at gentoo dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug stdio/30244] New: printf assertion fires in printf_fp when
 running coreutils' test suite (od crashes)
Date: Sat, 18 Mar 2023 23:45:57 +0000
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X-Bugzilla-Product: glibc
X-Bugzilla-Component: stdio
X-Bugzilla-Version: 2.37
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D30244

            Bug ID: 30244
           Summary: printf assertion fires in printf_fp when running
                    coreutils' test suite (od crashes)
           Product: glibc
           Version: 2.37
            Status: NEW
          Severity: normal
          Priority: P2
         Component: stdio
          Assignee: unassigned at sourceware dot org
          Reporter: sam at gentoo dot org
  Target Milestone: ---
              Host: ia64-unknown-linux-gnu
            Target: ia64-unknown-linux-gnu
             Build: ia64-unknown-linux-gnu

Noticed when running the coreutils test suite on ia64. See
https://lists.gnu.org/archive/html/coreutils/2023-03/msg00063.html.

```
# seq 19 > in
# od -An -tfDz -tfLz in
  1.6292135911574872e-259  1.9544134620527668e-259  >1.2.3.4.5.6.7.8.<
Fatal glibc error: printf_fp.c:501 (__printf_fp_buffer_1): assertion failed=
: cy
=3D=3D 1 || (p.frac[p.fracsize - 2] =3D=3D 0 && p.frac[0] =3D=3D 0)
Aborted
```

This is with sys-libs/glibc-2.37-r1 on Gentoo.

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