public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [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
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).