[Linaro-TCWG-CI] gcc patch #93154: FAIL: 1 regressions on arm

[Andre Vehreschild]

Hi Paul,

please, please, please let me know what the cause was. I have a similar error
that my testcase fails, but for -O2, -O3 and -Os, which I have not figured yet.

- Andre

On Tue, 2 Jul 2024 11:10:37 +0100
Paul Richard Thomas <paul.richard.thomas@gmail.com> wrote:

> Hi Andre,
>
> I have to hold back on the commit until the business below is sorted out.
>
> Cheers
>
> Paul
>
>
> ---------- Forwarded message ---------
> From: Paul Richard Thomas <paul.richard.thomas@gmail.com>
> Date: Tue, 2 Jul 2024 at 08:48
> Subject: [Linaro-TCWG-CI] gcc patch #93154: FAIL: 1 regressions on arm
> To: <linaro-toolchain@lists.linaro.org>
>
>
> Hi there,
>
> You detected a failure in gfortran.dg/class_transformational_2.f90:
> PASS: gfortran.dg/class_transformational_2.f90   -O0  (test for excess
> errors)
> PASS: gfortran.dg/class_transformational_2.f90   -O0  execution test
> PASS: gfortran.dg/class_transformational_2.f90   -O1  (test for excess
> errors)
> FAIL: gfortran.dg/class_transformational_2.f90   -O1  execution test
> PASS: gfortran.dg/class_transformational_2.f90   -O2  (test for excess
> errors)
> PASS: gfortran.dg/class_transformational_2.f90   -O2  execution test
> PASS: gfortran.dg/class_transformational_2.f90   -O3 -fomit-frame-pointer
> ...snip...
> PASS: gfortran.dg/class_transformational_2.f90   -O3 -fomit-frame-pointer
> ...snip...
> PASS: gfortran.dg/class_transformational_2.f90   -O3 -g  (test for excess
> errors)
> PASS: gfortran.dg/class_transformational_2.f90   -O3 -g  execution test
> PASS: gfortran.dg/class_transformational_2.f90   -Os  (test for excess
> errors)
> PASS: gfortran.dg/class_transformational_2.f90   -Os  execution test
>
> The stop message in the full log indicates a numeric error in the first
> test. I am unable to reproduce the error. Adding deallocation of all the
> allocated variables (which I should have done in the first place) and
> running valgrind with -s shows no errors and no memory loss.
>
> I find it odd that it should fail once at -O1 and not at -O2 and higher.
> Can you provide me with any insights; eg, by rerunning the testcase outside
> of the dejagnu framework?
>
> Thank you for doing this testing, by the way, even if the failure is a bit
> obscure at the moment.
>
> Best regards
>
> Paul


--
Andre Vehreschild * Email: vehre ad gmx dot de