[Bug testsuite/31232] New: [gdb/testsuite, ppc64le] FAIL: gdb.dwarf2/dw2-entry-points.exp: bt foo

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

https://sourceware.org/bugzilla/show_bug.cgi?id=31232

            Bug ID: 31232
           Summary: [gdb/testsuite, ppc64le] FAIL:
                    gdb.dwarf2/dw2-entry-points.exp: bt foo
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: testsuite
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

On powerpc64le-linux, power10, with trunk I run into:
...
Running /home/vries/gdb/src/gdb/testsuite/gdb.dwarf2/dw2-entry-points.exp ...
FAIL: gdb.dwarf2/dw2-entry-points.exp: bt foo
FAIL: gdb.dwarf2/dw2-entry-points.exp: continue to breakpoint: foobar (the
program exited)
FAIL: gdb.dwarf2/dw2-entry-points.exp: bt foobar
FAIL: gdb.dwarf2/dw2-entry-points.exp: bt fooso
...

First in more detail:
...
(gdb) PASS: gdb.dwarf2/dw2-entry-points.exp: continue to breakpoint: foo
bt^M
#0  0x00000000100006dc in foobar (J=2)^M
#1  0x000000001000070c in prog ()^M
(gdb) FAIL: gdb.dwarf2/dw2-entry-points.exp: bt foo
...

In contrast, with x86_64-linux I get:
...
(gdb) PASS: gdb.dwarf2/dw2-entry-points.exp: continue to breakpoint: foo
bt^M
#0  0x00000000004004d9 in foo (J=1, K=0)^M
#1  0x0000000000400503 in prog ()^M
(gdb) PASS: gdb.dwarf2/dw2-entry-points.exp: bt foo
...

The problem seems to be that foo and foobar end up at the same address:
...
(gdb) break foo^M
Breakpoint 2 at 0x100006dc^M
(gdb) break foobar^M
Note: breakpoint 2 also set at pc 0x100006dc.^M
Breakpoint 3 at 0x100006dc^M
...

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