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* [Bug fortran/33539] New: Too much noise on zero-length character strings
@ 2007-09-23 21:39 anlauf at gmx dot de
2007-10-01 0:08 ` [Bug fortran/33539] Too much noise for " fxcoudert at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: anlauf at gmx dot de @ 2007-09-23 21:39 UTC (permalink / raw)
To: gcc-bugs
Hi,
gfortran is way too noisy for zero-length character strings.
I get:
% gfc gfcbug71.f90
gfcbug71.f90:3.44:
character(len=*), parameter :: prefix = ""
1
Warning: CHARACTER variable has zero length at (1)
gfcbug71.f90:7.14:
use gfcbug71
1
Warning: CHARACTER variable has zero length at (1)
% cat gfcbug71.f90
module gfcbug71
implicit none
character(len=*), parameter :: prefix = ""
end module gfcbug71
program test
use gfcbug71
implicit none
print *, "prefix = ", prefix
end program test
The first warning is a nuisance, but the second one when USEing
the module is really annoying. This should not be the default.
--
Summary: Too much noise on zero-length character strings
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: anlauf at gmx dot de
GCC host triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33539
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug fortran/33539] Too much noise for zero-length character strings
2007-09-23 21:39 [Bug fortran/33539] New: Too much noise on zero-length character strings anlauf at gmx dot de
@ 2007-10-01 0:08 ` fxcoudert at gcc dot gnu dot org
2007-10-03 18:51 ` tkoenig at gcc dot gnu dot org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: fxcoudert at gcc dot gnu dot org @ 2007-10-01 0:08 UTC (permalink / raw)
To: gcc-bugs
--
fxcoudert at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fxcoudert at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
GCC host triplet|i686-pc-linux-gnu |
Keywords| |diagnostic
Last reconfirmed|0000-00-00 00:00:00 |2007-10-01 00:07:51
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33539
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug fortran/33539] Too much noise for zero-length character strings
2007-09-23 21:39 [Bug fortran/33539] New: Too much noise on zero-length character strings anlauf at gmx dot de
2007-10-01 0:08 ` [Bug fortran/33539] Too much noise for " fxcoudert at gcc dot gnu dot org
@ 2007-10-03 18:51 ` tkoenig at gcc dot gnu dot org
2007-10-04 20:26 ` tkoenig at gcc dot gnu dot org
2007-10-04 20:27 ` tkoenig at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: tkoenig at gcc dot gnu dot org @ 2007-10-03 18:51 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from tkoenig at gcc dot gnu dot org 2007-10-03 18:51 -------
This may work:
$ svn diff
Index: resolve.c
===================================================================
--- resolve.c (revision 128885)
+++ resolve.c (working copy)
@@ -6563,7 +6563,7 @@ resolve_charlen (gfc_charlen *cl)
/* "If the character length parameter value evaluates to a negative
value, the length of character entities declared is zero." */
- if (cl->length && !gfc_extract_int (cl->length, &i) && i <= 0)
+ if (cl->length && !gfc_extract_int (cl->length, &i) && i < 0)
{
gfc_warning_now ("CHARACTER variable has zero length at %L",
&cl->length->where);
(I do want a warning for a length that's less than zero, but
exactly zero seems to be OK).
--
tkoenig at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu dot
| |org
Severity|normal |enhancement
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33539
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug fortran/33539] Too much noise for zero-length character strings
2007-09-23 21:39 [Bug fortran/33539] New: Too much noise on zero-length character strings anlauf at gmx dot de
2007-10-01 0:08 ` [Bug fortran/33539] Too much noise for " fxcoudert at gcc dot gnu dot org
2007-10-03 18:51 ` tkoenig at gcc dot gnu dot org
@ 2007-10-04 20:26 ` tkoenig at gcc dot gnu dot org
2007-10-04 20:27 ` tkoenig at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: tkoenig at gcc dot gnu dot org @ 2007-10-04 20:26 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from tkoenig at gcc dot gnu dot org 2007-10-04 20:26 -------
Subject: Bug 33539
Author: tkoenig
Date: Thu Oct 4 20:26:24 2007
New Revision: 129022
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=129022
Log:
2007-10-04 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/33539
* resolve.c: Only warn if the string length is
less than zero.
2007-10-04 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/33539
* zero_length_2.f90: Omit warning for zero-length string.
* repeat_2.f90: Likewise.
* repeat_4.f90: Likewise.
* char_length_2.f90: Likewise.
Modified:
trunk/gcc/fortran/resolve.c
trunk/gcc/testsuite/gfortran.dg/char_length_2.f90
trunk/gcc/testsuite/gfortran.dg/repeat_2.f90
trunk/gcc/testsuite/gfortran.dg/repeat_4.f90
trunk/gcc/testsuite/gfortran.dg/zero_length_2.f90
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33539
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug fortran/33539] Too much noise for zero-length character strings
2007-09-23 21:39 [Bug fortran/33539] New: Too much noise on zero-length character strings anlauf at gmx dot de
` (2 preceding siblings ...)
2007-10-04 20:26 ` tkoenig at gcc dot gnu dot org
@ 2007-10-04 20:27 ` tkoenig at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: tkoenig at gcc dot gnu dot org @ 2007-10-04 20:27 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from tkoenig at gcc dot gnu dot org 2007-10-04 20:27 -------
Fixed on trunk.
--
tkoenig at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33539
^ permalink raw reply [flat|nested] 5+ messages in thread
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2007-09-23 21:39 [Bug fortran/33539] New: Too much noise on zero-length character strings anlauf at gmx dot de
2007-10-01 0:08 ` [Bug fortran/33539] Too much noise for " fxcoudert at gcc dot gnu dot org
2007-10-03 18:51 ` tkoenig at gcc dot gnu dot org
2007-10-04 20:26 ` tkoenig at gcc dot gnu dot org
2007-10-04 20:27 ` tkoenig at gcc dot gnu dot org
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