[Bug testsuite/30538] New: [gdb/testsuite, aarch64] FAIL: gdb.python/py-rbreak.exp: check number of returned breakpoints is 11

[Bug testsuite/30538] New: [gdb/testsuite, aarch64] FAIL: gdb.python/py-rbreak.exp: check number of returned breakpoints is 11

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30538

            Bug ID: 30538
           Summary: [gdb/testsuite, aarch64] FAIL:
                    gdb.python/py-rbreak.exp: check number of returned
                    breakpoints is 11
           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-15 aarch64,  I run into:
...
(gdb) PASS: gdb.python/py-rbreak.exp: nosharedlibrary
py sl = gdb.rbreak("^[^_]",minsyms=False)^M
Breakpoint 2 at 0x4004ac: file ../sysdeps/aarch64/crti.S, line 63.^M
Breakpoint 3 at 0x4005cc: file
/home/abuild/rpmbuild/BUILD/gdb-13.2/gdb/testsuite/gdb.python/py-rbreak-func2.c,
line \
21.^M
Breakpoint 4 at 0x4005d4: file
/home/abuild/rpmbuild/BUILD/gdb-13.2/gdb/testsuite/gdb.python/py-rbreak-func2.c,
line \
27.^M
Breakpoint 5 at 0x4005dc: file
/home/abuild/rpmbuild/BUILD/gdb-13.2/gdb/testsuite/gdb.python/py-rbreak-func2.c,
line \
33.^M
Breakpoint 6 at 0x400564: file
/home/abuild/rpmbuild/BUILD/gdb-13.2/gdb/testsuite/gdb.python/py-rbreak.c, line
21.^M
Breakpoint 7 at 0x40056c: file
/home/abuild/rpmbuild/BUILD/gdb-13.2/gdb/testsuite/gdb.python/py-rbreak.c, line
27.^M
Breakpoint 8 at 0x400574: file
/home/abuild/rpmbuild/BUILD/gdb-13.2/gdb/testsuite/gdb.python/py-rbreak.c, line
33.^M
Breakpoint 9 at 0x40057c: file
/home/abuild/rpmbuild/BUILD/gdb-13.2/gdb/testsuite/gdb.python/py-rbreak.c, line
39.^M
Breakpoint 10 at 0x400584: file
/home/abuild/rpmbuild/BUILD/gdb-13.2/gdb/testsuite/gdb.python/py-rbreak.c, line
45.^M
Breakpoint 11 at 0x40058c: file
/home/abuild/rpmbuild/BUILD/gdb-13.2/gdb/testsuite/gdb.python/py-rbreak.c, line
51.^M
Breakpoint 12 at 0x4005a4: file
/home/abuild/rpmbuild/BUILD/gdb-13.2/gdb/testsuite/gdb.python/py-rbreak.c, line
63.^M
Breakpoint 13 at 0x400594: file
/home/abuild/rpmbuild/BUILD/gdb-13.2/gdb/testsuite/gdb.python/py-rbreak.c, line
57.^M
(gdb) py print(len(sl))^M
12^M
(gdb) FAIL: gdb.python/py-rbreak.exp: check number of returned breakpoints is
11
...

This is the unexpected one:
...
Breakpoint 2 at 0x4004ac: file ../sysdeps/aarch64/crti.S, line 63.^M
...

Looking in the glibc sources, it's function "call_weak_fn".

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[Bug testsuite/30538] [gdb/testsuite, aarch64] FAIL: gdb.python/py-rbreak.exp: check number of returned breakpoints is 11

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30538

--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom de Vries <vries@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=9f82823f8972fbd4bba0230b27828d87f0548cbc

commit 9f82823f8972fbd4bba0230b27828d87f0548cbc
Author: Tom de Vries <tdevries@suse.de>
Date:   Mon Jun 12 13:00:09 2023 +0200

    [gdb/testsuite] Relax breakpoint count check in gdb.python/py-rbreak.exp

    With a gdb 13.2 based package on SLE-15 aarch64,  I run into:
    ...
    (gdb) PASS: gdb.python/py-rbreak.exp: nosharedlibrary
    py sl = gdb.rbreak("^[^_]",minsyms=False)^M
    Breakpoint 2 at 0x4004ac: file ../sysdeps/aarch64/crti.S, line 63.^M
      ...
    (gdb) py print(len(sl))^M
    12^M
    (gdb) FAIL: gdb.python/py-rbreak.exp: check number of returned breakpoints
is 11
    ...

    The FAIL is due to:
    - the glibc object crti.o containing debug information for function
      call_weak_fn, and
    - the test-case not expecting this.

    The debug information is there due to compiling glibc using a binutils
which
    contains commit 591cc9fbbfd ("gas/Dwarf: record functions").

    I've run into a similar issue before, see commit 3fbbcf473a5
("[gdb/testsuite]
    Fix regexp in py-rbreak.exp").

    The fix I applied there was to use a regexp "^[^_]" to filter out
    __libc_csu_fini and __libc_csu_init, but that doesn't work for
call_weak_fn.

    Fix this by:
    - reverting the regexp to "", and
    - rewriting the check to require at least 11 functions, rather than a
precise
      match.

    Tested on x86_64-linux.

    PR testsuite/30538
    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=30538

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[Bug testsuite/30538] [gdb/testsuite, aarch64] FAIL: gdb.python/py-rbreak.exp: check number of returned breakpoints is 11

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30538

Tom de Vries <vries at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |14.1
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
Fixed.

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