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* [Bug fortran/17912] New: gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77
@ 2004-10-09 16:19 anlauf at hep dot tu-darmstadt dot de
2004-10-09 18:37 ` [Bug fortran/17912] " pinskia at gcc dot gnu dot org
` (9 more replies)
0 siblings, 10 replies; 11+ messages in thread
From: anlauf at hep dot tu-darmstadt dot de @ 2004-10-09 16:19 UTC (permalink / raw)
To: gcc-bugs
Hi,
this code fails to compile with gfortran, but compiles with g77
(and, needless to say, other compilers ;-)
program gfcbug16
integer i
i = -2147483647 - 1
print *, i
end
I get:
In file gfcbug16.f:3
i = -2147483647 - 1
1
Error: Arithmetic overflow at (1)
Note that the integer constants are perfectly legal (so this is different
from bug report #13490), but gfortran sort of "optimizes" by calculating
the difference and then complains, even if compiling with -O0 -g.
I could live with a (suppressible) warning message, but throwing an error
clearly breaks legacy code.
Cheers,
-ha
--
Summary: gfortran: Bogus "Arithmetic overflow" error, regression
w.r.t. g77
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: anlauf at hep dot tu-darmstadt dot de
CC: gcc-bugs at gcc dot gnu dot org
GCC host triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17912
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/17912] gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77
2004-10-09 16:19 [Bug fortran/17912] New: gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77 anlauf at hep dot tu-darmstadt dot de
@ 2004-10-09 18:37 ` pinskia at gcc dot gnu dot org
2004-10-11 16:28 ` tobi at gcc dot gnu dot org
` (8 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-10-09 18:37 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-10-09 18:37 -------
Confirmed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Keywords| |rejects-valid
Last reconfirmed|0000-00-00 00:00:00 |2004-10-09 18:37:37
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17912
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/17912] gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77
2004-10-09 16:19 [Bug fortran/17912] New: gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77 anlauf at hep dot tu-darmstadt dot de
2004-10-09 18:37 ` [Bug fortran/17912] " pinskia at gcc dot gnu dot org
@ 2004-10-11 16:28 ` tobi at gcc dot gnu dot org
2004-10-19 18:54 ` coyote at coyotegulch dot com
` (7 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: tobi at gcc dot gnu dot org @ 2004-10-11 16:28 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From tobi at gcc dot gnu dot org 2004-10-11 16:28 -------
This has been a topic of heated discussion in the past. See the bug I added as a
dependency and the various discussions this had spawned. I think as I always
thought that we're safe from the point of view of the standard to allow integer
ranges [-2**31, 2**31-1], and now that the dust has settled I think a patch for
this can be proposed again.
I'll cook something up these days.
--
What |Removed |Added
----------------------------------------------------------------------------
BugsThisDependsOn| |13490
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17912
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/17912] gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77
2004-10-09 16:19 [Bug fortran/17912] New: gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77 anlauf at hep dot tu-darmstadt dot de
2004-10-09 18:37 ` [Bug fortran/17912] " pinskia at gcc dot gnu dot org
2004-10-11 16:28 ` tobi at gcc dot gnu dot org
@ 2004-10-19 18:54 ` coyote at coyotegulch dot com
2004-10-19 19:07 ` coyote at coyotegulch dot com
` (6 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: coyote at coyotegulch dot com @ 2004-10-19 18:54 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From coyote at coyotegulch dot com 2004-10-19 18:54 -------
I've posted an update to the original "asymmetric integers" patch, but it did
not address this specific PR.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17912
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/17912] gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77
2004-10-09 16:19 [Bug fortran/17912] New: gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77 anlauf at hep dot tu-darmstadt dot de
` (2 preceding siblings ...)
2004-10-19 18:54 ` coyote at coyotegulch dot com
@ 2004-10-19 19:07 ` coyote at coyotegulch dot com
2004-10-22 0:07 ` coyote at coyotegulch dot com
` (5 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: coyote at coyotegulch dot com @ 2004-10-19 19:07 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From coyote at coyotegulch dot com 2004-10-19 19:06 -------
Correction: My patch does fix this bug. See:
http://gcc.gnu.org/ml/gcc-patches/2004-10/msg01613.html
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17912
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/17912] gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77
2004-10-09 16:19 [Bug fortran/17912] New: gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77 anlauf at hep dot tu-darmstadt dot de
` (3 preceding siblings ...)
2004-10-19 19:07 ` coyote at coyotegulch dot com
@ 2004-10-22 0:07 ` coyote at coyotegulch dot com
2004-10-28 21:45 ` coyote at coyotegulch dot com
` (4 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: coyote at coyotegulch dot com @ 2004-10-22 0:07 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From coyote at coyotegulch dot com 2004-10-22 00:07 -------
An improved patch. See comments attached to PR13490, or the patch below:
http://gcc.gnu.org/ml/gcc-patches/2004-10/msg01876.html
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17912
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/17912] gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77
2004-10-09 16:19 [Bug fortran/17912] New: gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77 anlauf at hep dot tu-darmstadt dot de
` (4 preceding siblings ...)
2004-10-22 0:07 ` coyote at coyotegulch dot com
@ 2004-10-28 21:45 ` coyote at coyotegulch dot com
2004-10-28 21:46 ` coyote at coyotegulch dot com
` (3 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: coyote at coyotegulch dot com @ 2004-10-28 21:45 UTC (permalink / raw)
To: gcc-bugs
--
Bug 17912 depends on bug 13490, which changed state.
Bug 13490 Summary: Compiler rejects valid constant -2147483648 for 32-bit int
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13490
What |Old Value |New Value
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17912
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/17912] gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77
2004-10-09 16:19 [Bug fortran/17912] New: gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77 anlauf at hep dot tu-darmstadt dot de
` (5 preceding siblings ...)
2004-10-28 21:45 ` coyote at coyotegulch dot com
@ 2004-10-28 21:46 ` coyote at coyotegulch dot com
2004-10-28 21:48 ` pinskia at gcc dot gnu dot org
` (2 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: coyote at coyotegulch dot com @ 2004-10-28 21:46 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From coyote at coyotegulch dot com 2004-10-28 21:46 -------
Patch committed after approval
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17912
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/17912] gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77
2004-10-09 16:19 [Bug fortran/17912] New: gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77 anlauf at hep dot tu-darmstadt dot de
` (6 preceding siblings ...)
2004-10-28 21:46 ` coyote at coyotegulch dot com
@ 2004-10-28 21:48 ` pinskia at gcc dot gnu dot org
2004-10-28 22:25 ` cvs-commit at gcc dot gnu dot org
2004-11-21 16:19 ` pinskia at gcc dot gnu dot org
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-10-28 21:48 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-10-28 21:48 -------
Fixed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.0.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17912
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/17912] gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77
2004-10-09 16:19 [Bug fortran/17912] New: gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77 anlauf at hep dot tu-darmstadt dot de
` (7 preceding siblings ...)
2004-10-28 21:48 ` pinskia at gcc dot gnu dot org
@ 2004-10-28 22:25 ` cvs-commit at gcc dot gnu dot org
2004-11-21 16:19 ` pinskia at gcc dot gnu dot org
9 siblings, 0 replies; 11+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-10-28 22:25 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-10-28 22:25 -------
Subject: Bug 17912
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: srladd@gcc.gnu.org 2004-10-28 22:25:18
Modified files:
gcc/fortran : ChangeLog
Log message:
Fix for PR fortran/13490, PR fortran/17912
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/ChangeLog.diff?cvsroot=gcc&r1=1.239&r2=1.240
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17912
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/17912] gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77
2004-10-09 16:19 [Bug fortran/17912] New: gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77 anlauf at hep dot tu-darmstadt dot de
` (8 preceding siblings ...)
2004-10-28 22:25 ` cvs-commit at gcc dot gnu dot org
@ 2004-11-21 16:19 ` pinskia at gcc dot gnu dot org
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-11-21 16:19 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-11-21 16:19 -------
*** Bug 18597 has been marked as a duplicate of this bug. ***
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |paul dot richard dot thomas
| |at cea dot fr
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17912
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2004-10-09 16:19 [Bug fortran/17912] New: gfortran: Bogus "Arithmetic overflow" error, regression w.r.t. g77 anlauf at hep dot tu-darmstadt dot de
2004-10-09 18:37 ` [Bug fortran/17912] " pinskia at gcc dot gnu dot org
2004-10-11 16:28 ` tobi at gcc dot gnu dot org
2004-10-19 18:54 ` coyote at coyotegulch dot com
2004-10-19 19:07 ` coyote at coyotegulch dot com
2004-10-22 0:07 ` coyote at coyotegulch dot com
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