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* [Bug fortran/17568] New: ISHFT intrinsic: bogus overflow error
@ 2004-09-20 12:23 anlauf at hep dot tu-darmstadt dot de
2004-09-20 13:09 ` [Bug fortran/17568] " pinskia at gcc dot gnu dot org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: anlauf at hep dot tu-darmstadt dot de @ 2004-09-20 12:23 UTC (permalink / raw)
To: gcc-bugs
Hi,
the following code
program gfcbug9
implicit none
integer, parameter :: nbits = bit_size (1)
integer :: res
res = ishft (1, nbits-1)
print *, res
end program gfcbug9
fails to compile with the error message:
In file gfcbug9.f90:5
res = ishft (1, nbits-1)
1
Error: Result of ISHFT overflows its kind at (1)
This is a bug. AFAIK all bits that drop out left or right just
should get lost. The only constraint (abs(shift) < bit_size) is
satisfied.
Cheers,
-ha
--
Summary: ISHFT intrinsic: bogus overflow error
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-cygwin
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17568
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/17568] ISHFT intrinsic: bogus overflow error
2004-09-20 12:23 [Bug fortran/17568] New: ISHFT intrinsic: bogus overflow error anlauf at hep dot tu-darmstadt dot de
@ 2004-09-20 13:09 ` pinskia at gcc dot gnu dot org
2004-10-02 19:37 ` tobi at gcc dot gnu dot org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-09-20 13:09 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-09-20 13:09 -------
Confirmed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2004-09-20 13:09:34
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17568
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/17568] ISHFT intrinsic: bogus overflow error
2004-09-20 12:23 [Bug fortran/17568] New: ISHFT intrinsic: bogus overflow error anlauf at hep dot tu-darmstadt dot de
2004-09-20 13:09 ` [Bug fortran/17568] " pinskia at gcc dot gnu dot org
@ 2004-10-02 19:37 ` tobi at gcc dot gnu dot org
2004-10-02 19:42 ` tobi at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: tobi at gcc dot gnu dot org @ 2004-10-02 19:37 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From tobi at gcc dot gnu dot org 2004-10-02 19:37 -------
Patch here: http://gcc.gnu.org/ml/fortran/2004-10/msg00005.html
--
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch, rejects-valid
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17568
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/17568] ISHFT intrinsic: bogus overflow error
2004-09-20 12:23 [Bug fortran/17568] New: ISHFT intrinsic: bogus overflow error anlauf at hep dot tu-darmstadt dot de
2004-09-20 13:09 ` [Bug fortran/17568] " pinskia at gcc dot gnu dot org
2004-10-02 19:37 ` tobi at gcc dot gnu dot org
@ 2004-10-02 19:42 ` tobi at gcc dot gnu dot org
2004-10-06 16:21 ` cvs-commit at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: tobi at gcc dot gnu dot org @ 2004-10-02 19:42 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From tobi at gcc dot gnu dot org 2004-10-02 19:42 -------
Wrong. Patch here: http://gcc.gnu.org/ml/fortran/2004-10/msg00006.html
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17568
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/17568] ISHFT intrinsic: bogus overflow error
2004-09-20 12:23 [Bug fortran/17568] New: ISHFT intrinsic: bogus overflow error anlauf at hep dot tu-darmstadt dot de
` (2 preceding siblings ...)
2004-10-02 19:42 ` tobi at gcc dot gnu dot org
@ 2004-10-06 16:21 ` cvs-commit at gcc dot gnu dot org
2004-10-06 16:27 ` tobi at gcc dot gnu dot org
2004-10-06 17:03 ` pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-10-06 16:21 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-10-06 16:21 -------
Subject: Bug 17568
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: tobi@gcc.gnu.org 2004-10-06 16:21:42
Modified files:
gcc/fortran : ChangeLog simplify.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/gfortran.dg: ishft.f90
Log message:
fortran/
PR fortran/17568
* simplify.c (twos_complement): New function.
(gfc_simplify_ishft, gfc_simplify_ishftc): Revise.
testsuite/
PR fortran/17568
* gfortran.dg/ishft.f90: New test.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/ChangeLog.diff?cvsroot=gcc&r1=1.227&r2=1.228
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/simplify.c.diff?cvsroot=gcc&r1=1.12&r2=1.13
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.4391&r2=1.4392
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gfortran.dg/ishft.f90.diff?cvsroot=gcc&r1=NONE&r2=1.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17568
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/17568] ISHFT intrinsic: bogus overflow error
2004-09-20 12:23 [Bug fortran/17568] New: ISHFT intrinsic: bogus overflow error anlauf at hep dot tu-darmstadt dot de
` (3 preceding siblings ...)
2004-10-06 16:21 ` cvs-commit at gcc dot gnu dot org
@ 2004-10-06 16:27 ` tobi at gcc dot gnu dot org
2004-10-06 17:03 ` pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: tobi at gcc dot gnu dot org @ 2004-10-06 16:27 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From tobi at gcc dot gnu dot org 2004-10-06 16:27 -------
Fixed.
--
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.0.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17568
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/17568] ISHFT intrinsic: bogus overflow error
2004-09-20 12:23 [Bug fortran/17568] New: ISHFT intrinsic: bogus overflow error anlauf at hep dot tu-darmstadt dot de
` (4 preceding siblings ...)
2004-10-06 16:27 ` tobi at gcc dot gnu dot org
@ 2004-10-06 17:03 ` pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-10-06 17:03 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-10-06 17:03 -------
CLosing as missed to closed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17568
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2004-10-06 17:03 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-09-20 12:23 [Bug fortran/17568] New: ISHFT intrinsic: bogus overflow error anlauf at hep dot tu-darmstadt dot de
2004-09-20 13:09 ` [Bug fortran/17568] " pinskia at gcc dot gnu dot org
2004-10-02 19:37 ` tobi at gcc dot gnu dot org
2004-10-02 19:42 ` tobi at gcc dot gnu dot org
2004-10-06 16:21 ` cvs-commit at gcc dot gnu dot org
2004-10-06 16:27 ` tobi at gcc dot gnu dot org
2004-10-06 17:03 ` pinskia at gcc dot gnu dot org
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