[Bug testsuite/30528] New: [gdb/testsuite] FAIL: gdb.dwarf2/per-bfd-sharing.exp: couldn't remove files in temporary cache dir

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=30528

            Bug ID: 30528
           Summary: [gdb/testsuite] FAIL: gdb.dwarf2/per-bfd-sharing.exp:
                    couldn't remove files in temporary cache dir
           Product: gdb
           Version: 13.1
            Status: NEW
          Severity: normal
          Priority: P2
         Component: testsuite
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

With a gdb 13.1 based package on SLE-11 i586, I run into:
...
(gdb) PASS: gdb.dwarf2/per-bfd-sharing.exp: first=readnow: second=readnow:
third=readnow: load third: print foo
Executing on host: sh -c "rm /tmp/tmp.xQ6KmzbodJ/*.gdb-index"   (timeout = 300)
builtin_spawn sh -c rm /tmp/tmp.xQ6KmzbodJ/*.gdb-index^M
FAIL: gdb.dwarf2/per-bfd-sharing.exp: couldn't remove files in temporary cache
dir
testcase
/usr/src/packages/BUILD/gdb-13.1/gdb/testsuite/gdb.dwarf2/per-bfd-sharing.exp
...

I don't understand what has caused this (part of what makes this difficult is
that there's no error message).

I'm not able to reproduce this.

However, I think that this should not be a FAIL.

A FAIL is for when GDB does something incorrect, which is not necesarily the
case here, so perhaps this should be warning.

However, if the failure to remove the file is due to the file not being there
in the first place, then that is a GDB error.  We just don't explicitly check
for it currently.

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