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* [Bug fortran/107373] New: Unexpected result with loop optimisation
@ 2022-10-24 8:39 raphael.monod at wanadoo dot fr
2022-10-24 12:25 ` [Bug fortran/107373] " marxin at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: raphael.monod at wanadoo dot fr @ 2022-10-24 8:39 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107373
Bug ID: 107373
Summary: Unexpected result with loop optimisation
Product: gcc
Version: 8.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: raphael.monod at wanadoo dot fr
Target Milestone: ---
Created attachment 53765
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53765&action=edit
Source of test producing the bug (MWE)
The attached test show the vector "tab_int_from_logical" contains -1, although
+1 are expected.
Compiler option -O3 is required to get this bug.
Adding a print in the loop go around it.
Degreasing the dimension 'IDIM' from 16 to 15 go around it.
I do not have test all GCC releases, but I met this bug with release : 7.3.0,
8.2.0, 8.5.0, 9.4.0.
Everything is good with releases 6.3.0, 11.3.0, 12.1.0
I known that releases used to produce this bug are no longer supported, bug I
think that debian 10 (which is again supported) use 8.x GCC release.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/107373] Unexpected result with loop optimisation
2022-10-24 8:39 [Bug fortran/107373] New: Unexpected result with loop optimisation raphael.monod at wanadoo dot fr
@ 2022-10-24 12:25 ` marxin at gcc dot gnu.org
2022-10-24 12:26 ` marxin at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: marxin at gcc dot gnu.org @ 2022-10-24 12:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107373
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2022-10-24
CC| |marxin at gcc dot gnu.org,
| |rsandifo at gcc dot gnu.org
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on master with r10-5067-gce19a48227949920.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/107373] Unexpected result with loop optimisation
2022-10-24 8:39 [Bug fortran/107373] New: Unexpected result with loop optimisation raphael.monod at wanadoo dot fr
2022-10-24 12:25 ` [Bug fortran/107373] " marxin at gcc dot gnu.org
@ 2022-10-24 12:26 ` marxin at gcc dot gnu.org
2022-10-24 12:40 ` jb at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: marxin at gcc dot gnu.org @ 2022-10-24 12:26 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107373
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jb at gcc dot gnu.org
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
And started with r7-5505-ga388bdc777f58251.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/107373] Unexpected result with loop optimisation
2022-10-24 8:39 [Bug fortran/107373] New: Unexpected result with loop optimisation raphael.monod at wanadoo dot fr
2022-10-24 12:25 ` [Bug fortran/107373] " marxin at gcc dot gnu.org
2022-10-24 12:26 ` marxin at gcc dot gnu.org
@ 2022-10-24 12:40 ` jb at gcc dot gnu.org
2022-10-24 13:06 ` marxin at gcc dot gnu.org
2022-10-24 13:25 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jb at gcc dot gnu.org @ 2022-10-24 12:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107373
--- Comment #3 from Janne Blomqvist <jb at gcc dot gnu.org> ---
63ee540430c3 might be related wrt fixing it?
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/107373] Unexpected result with loop optimisation
2022-10-24 8:39 [Bug fortran/107373] New: Unexpected result with loop optimisation raphael.monod at wanadoo dot fr
` (2 preceding siblings ...)
2022-10-24 12:40 ` jb at gcc dot gnu.org
@ 2022-10-24 13:06 ` marxin at gcc dot gnu.org
2022-10-24 13:25 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: marxin at gcc dot gnu.org @ 2022-10-24 13:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107373
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Janne Blomqvist from comment #3)
> 63ee540430c3 might be related wrt fixing it?
r8-4424-g63ee540430c32a
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/107373] Unexpected result with loop optimisation
2022-10-24 8:39 [Bug fortran/107373] New: Unexpected result with loop optimisation raphael.monod at wanadoo dot fr
` (3 preceding siblings ...)
2022-10-24 13:06 ` marxin at gcc dot gnu.org
@ 2022-10-24 13:25 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-10-24 13:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107373
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |9.4.0
Resolution|--- |FIXED
Status|NEW |RESOLVED
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
In any case it's fixed in all still maintained GCC releases.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2022-10-24 13:25 UTC | newest]
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2022-10-24 8:39 [Bug fortran/107373] New: Unexpected result with loop optimisation raphael.monod at wanadoo dot fr
2022-10-24 12:25 ` [Bug fortran/107373] " marxin at gcc dot gnu.org
2022-10-24 12:26 ` marxin at gcc dot gnu.org
2022-10-24 12:40 ` jb at gcc dot gnu.org
2022-10-24 13:06 ` marxin at gcc dot gnu.org
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