[Bug breakpoints/26292] New: FAIL: gdb.base/checkpoint.exp: exit, dropped into next fork one (timeout)

[Bug breakpoints/26292] New: FAIL: gdb.base/checkpoint.exp: exit, dropped into next fork one (timeout)

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=26292

            Bug ID: 26292
           Summary: FAIL: gdb.base/checkpoint.exp: exit, dropped into next
                    fork one (timeout)
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: breakpoints
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

On openSUSE Leap 42.3 system, I run into:
...
FAIL: gdb.base/checkpoint.exp: exit, dropped into next fork one (timeout)
FAIL: gdb.base/checkpoint.exp: exit, dropped into next fork two (timeout)
FAIL: gdb.base/checkpoint.exp: exit, dropped into next fork three (timeout)
FAIL: gdb.base/checkpoint.exp: exit, dropped into next fork four (timeout)
FAIL: gdb.base/checkpoint.exp: exit, dropped into next fork five (timeout)
FAIL: gdb.base/checkpoint.exp: info checkpoints two (timeout)
FAIL: gdb.base/checkpoint.exp: kill all one (timeout)
FAIL: gdb.base/checkpoint.exp: no more checkpoint 0 (timeout)
FAIL: gdb.base/checkpoint.exp: no more checkpoint 1 (timeout)
FAIL: gdb.base/checkpoint.exp: no more checkpoint 2 (timeout)
FAIL: gdb.base/checkpoint.exp: no more checkpoint 3 (timeout)
FAIL: gdb.base/checkpoint.exp: no more checkpoint 4 (timeout)
FAIL: gdb.base/checkpoint.exp: no more checkpoint 5 (timeout)
FAIL: gdb.base/checkpoint.exp: no more checkpoint 6 (timeout)
FAIL: gdb.base/checkpoint.exp: no more checkpoint 7 (timeout)
FAIL: gdb.base/checkpoint.exp: no more checkpoint 8 (timeout)
FAIL: gdb.base/checkpoint.exp: no more checkpoint 9 (timeout)
FAIL: gdb.base/checkpoint.exp: no more checkpoint 10 (timeout)
...

In more detail:
...
(gdb) PASS: gdb.base/checkpoint.exp: outfile still open 10
delete breakpoints^M
Delete all breakpoints? (y or n) y^M
(gdb) info breakpoints^M
No breakpoints or watchpoints.^M
(gdb) continue^M
Continuing.^M
Copy complete.^M
FAIL: gdb.base/checkpoint.exp: exit, dropped into next fork one (timeout)
...

A normal continuation looks like:
...
(gdb) PASS: gdb.base/checkpoint.exp: outfile still open 10
delete breakpoints^M
Delete all breakpoints? (y or n) y^M
(gdb) info breakpoints^M
No breakpoints or watchpoints.^M
(gdb) continue^M
Continuing.^M
Copy complete.^M
Deleting copy.^M
[Inferior 1 (process 12280) exited normally]^M
[Switching to process 12279]^M
(gdb) PASS: gdb.base/checkpoint.exp: exit, dropped into next fork one
...

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[Bug breakpoints/26292] FAIL: gdb.base/checkpoint.exp: exit, dropped into next fork one (timeout)

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=26292

--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
I wrapped the whole test in a timeout factor 10, but that didn't help.

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[Bug breakpoints/26292] FAIL: gdb.base/checkpoint.exp: exit, dropped into next fork one (timeout)

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=26292

--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
We seem to be hanging somewhere in fclose:
...
  printf ("Copy complete.\n");  /* breakpoint 2 */
  fclose (in);
  fclose (out);
  printf ("Deleting copy.\n");  /* breakpoint 3 */
...

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