Re: [PATCH 01/11] [gdb/testsuite] Add gdb.base/fission-macro.exp

[Tom de Vries <tdevries@suse.de>]

On 6/17/24 10:16, Christophe Lyon wrote:
> Hi Tom,
> 
> On Thu, 13 Jun 2024 at 17:40, Tom de Vries <tdevries@suse.de> wrote:
>>
>> On 5/21/24 17:44, Tom de Vries wrote:
>>> Starting with gcc commit 80048aa13a6 ("debug/111409 - don't generate COMDAT
>>> macro sections for split DWARF"), available from release gcc 14.1 onwards, gcc
>>> produces a usable dwarf-5 32-bit .debug_macro.dwo section.
>>>
>>> Add a test-case excercising this.
>>>
>>
>> I went ahead and pushed this patch, since it only adds a test-case.
>>
> 
> As you may have noticed, this patch was flagged by our CI on arm:
> FAIL: gdb.base/fission-macro.exp: dwarf_version=5: dwarf_bits=32:
> strict_dwarf=0: info macro FIRST
> FAIL: gdb.base/fission-macro.exp: dwarf_version=5: dwarf_bits=32:
> strict_dwarf=0: info macro FOURTH
> FAIL: gdb.base/fission-macro.exp: dwarf_version=5: dwarf_bits=32:
> strict_dwarf=0: info macro SECOND
> FAIL: gdb.base/fission-macro.exp: dwarf_version=5: dwarf_bits=32:
> strict_dwarf=0: info macro THIRD
> FAIL: gdb.base/fission-macro.exp: dwarf_version=5: dwarf_bits=32:
> strict_dwarf=1: info macro FIRST
> FAIL: gdb.base/fission-macro.exp: dwarf_version=5: dwarf_bits=32:
> strict_dwarf=1: info macro FOURTH
> FAIL: gdb.base/fission-macro.exp: dwarf_version=5: dwarf_bits=32:
> strict_dwarf=1: info macro SECOND
> FAIL: gdb.base/fission-macro.exp: dwarf_version=5: dwarf_bits=32:
> strict_dwarf=1: info macro THIRD
> 
> 
>  From gdb.log I can see:
> info macro FIRST
> Defined at /home/tcwg-buildslave/workspace/tcwg_gnu_2/abe/snapshots/gdb.git~master/gdb/testsuite/gdb.base/fission-macro.c:0
> -DFIRST=1
> (gdb) FAIL: gdb.base/fission-macro.exp: dwarf_version=5:
> dwarf_bits=32: strict_dwarf=0: info macro FIRST
> info macro SECOND
> Defined at /home/tcwg-buildslave/workspace/tcwg_gnu_2/abe/snapshots/gdb.git~master/gdb/testsuite/gdb.base/fission-macro.c:0
> -DSECOND=2
> (gdb) FAIL: gdb.base/fission-macro.exp: dwarf_version=5:
> dwarf_bits=32: strict_dwarf=0: info macro SECOND
> 
> info macro THIRD
> Defined at /home/tcwg-buildslave/workspace/tcwg_gnu_2/abe/snapshots/gdb.git~master/gdb/testsuite/gdb.base/fission-macro-2.c:0
> -DTHIRD=3
> (gdb) FAIL: gdb.base/fission-macro.exp: dwarf_version=5:
> dwarf_bits=32: strict_dwarf=0: info macro THIRD
> info macro FOURTH
> Defined at /home/tcwg-buildslave/workspace/tcwg_gnu_2/abe/snapshots/gdb.git~master/gdb/testsuite/gdb.base/fission-macro-2.c:0
> -DFOURTH=4
> (gdb) FAIL: gdb.base/fission-macro.exp: dwarf_version=5:
> dwarf_bits=32: strict_dwarf=0: info macro FOURTH
> 
> 
> I've also noticed:
> get_compiler_info: gcc-15-0-0
> 
> (which is expected, this CI loop is using trunk GCC)
> 
> Does this help?

Hi Christophe,

Thanks for the info.

Indeed I already noticed it, and filed this PR ( 
https://sourceware.org/bugzilla/show_bug.cgi?id=31897 ) to track it.

I managed to reproduce it, and AFAICT it's fixed by the following patch 
in the patch series (something I didn't realize when committing, because 
this FAIL occurs only on 32-bit targets).

Sorry for the noise.

Thanks,
- Tom