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* [Bug fortran/34248] New: regression on assumed length character function
@ 2007-11-27 12:30 francois dot jacq at irsn dot fr
2007-11-27 13:49 ` [Bug fortran/34248] ICE " pault at gcc dot gnu dot org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: francois dot jacq at irsn dot fr @ 2007-11-27 12:30 UTC (permalink / raw)
To: gcc-bugs
I tried to find without success a simular bug with CHARACTER(*) function :
Files test5.f90 :
FUNCTION ctbgt() RESULT(ctab)
CHARACTER(*) :: ctab
END
lcoul@b07p0012:~/test$ gfortran -c test5.f90
test5.f90: In function 'ctbgt':
test5.f90:2: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
--
Summary: regression on assumed length character function
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: francois dot jacq at irsn dot fr
GCC build triplet: 20071126 (experimental) [trunk revision 130423]
GCC host triplet: i686 linux
GCC target triplet: GNU Fortran (GCC) 4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34248
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/34248] ICE on assumed length character function
2007-11-27 12:30 [Bug fortran/34248] New: regression on assumed length character function francois dot jacq at irsn dot fr
@ 2007-11-27 13:49 ` pault at gcc dot gnu dot org
2007-11-27 22:09 ` burnus at gcc dot gnu dot org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: pault at gcc dot gnu dot org @ 2007-11-27 13:49 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pault at gcc dot gnu dot org 2007-11-27 13:48 -------
Confirmed.
gcc-4.2.0 20061221 (prerelease) gives
FUNCTION ctbgt() RESULT(ctab)
1
Warning: CHARACTER(*) function 'ctbgt' at (1) is obsolescent in fortran 95
pr34248.f90: In function 'ctbgt':
pr34248.f90:1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
4.3.0 requires -std=f95 to get the benefit of the warning.
However, the ICE certainly occurs - have changed the title to reflect this.
Note that the F77 version works OK:
CHARACTER(*) FUNCTION ctbgt()
ctbgt = ""
END
Thanks for the report.
Paul
--
pault at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2007-11-27 13:48:47
date| |
Summary|regression on assumed length|ICE on assumed length
|character function |character function
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34248
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/34248] ICE on assumed length character function
2007-11-27 12:30 [Bug fortran/34248] New: regression on assumed length character function francois dot jacq at irsn dot fr
2007-11-27 13:49 ` [Bug fortran/34248] ICE " pault at gcc dot gnu dot org
@ 2007-11-27 22:09 ` burnus at gcc dot gnu dot org
2007-11-29 17:42 ` burnus at gcc dot gnu dot org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: burnus at gcc dot gnu dot org @ 2007-11-27 22:09 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from burnus at gcc dot gnu dot org 2007-11-27 22:09 -------
No regression. Valgrind shows:
==21714== Invalid read of size 4
==21714== at 0x49C077: generate_local_decl (trans-decl.c:2980)
==21714== by 0x471026: traverse_ns (symbol.c:2951)
==21714== by 0x499FFD: gfc_generate_function_code (trans-decl.c:3081)
==21714== by 0x4558AB: gfc_parse_file (parse.c:3399)
==21714== by 0x47DA34: gfc_be_parse_file (f95-lang.c:258)
==21714== by 0x6EDC54: toplev_main (toplev.c:1042)
==21714== by 0x52CBB29: (below main) (in /lib64/libc-2.6.1.so)
> Note that the F77 version works OK:
Well, it works without RESULT. Using the following also crashes:
character(*) FUNCTION ctbgt() RESULT(ctab)
END
The following patch fixes it. Or is it only a stupid workaround?
In the following, "sym->ts.cl->length" == NULL
Index: trans-decl.c
===================================================================
--- trans-decl.c (revision 130466)
+++ trans-decl.c (working copy)
@@ -2978,7 +2978,9 @@
int i;
if (sym->ts.type == BT_CHARACTER
- && sym->ts.cl->length->expr_type != EXPR_CONSTANT)
+ && sym->ts.cl
+ && sym->ts.cl->length
+ && sym->ts.cl->length->expr_type != EXPR_CONSTANT)
generate_expr_decls (sym, sym->ts.cl->length);
--
burnus at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |burnus at gcc dot gnu dot
| |org
Keywords| |ice-on-valid-code
Known to fail| |4.1.3 4.2.2 4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34248
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/34248] ICE on assumed length character function
2007-11-27 12:30 [Bug fortran/34248] New: regression on assumed length character function francois dot jacq at irsn dot fr
2007-11-27 13:49 ` [Bug fortran/34248] ICE " pault at gcc dot gnu dot org
2007-11-27 22:09 ` burnus at gcc dot gnu dot org
@ 2007-11-29 17:42 ` burnus at gcc dot gnu dot org
2007-11-29 17:43 ` burnus at gcc dot gnu dot org
2007-11-30 17:56 ` jvdelisle at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: burnus at gcc dot gnu dot org @ 2007-11-29 17:42 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from burnus at gcc dot gnu dot org 2007-11-29 17:41 -------
Subject: Bug 34248
Author: burnus
Date: Thu Nov 29 17:41:37 2007
New Revision: 130517
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130517
Log:
2007-11-29 Tobias Burnus <burnus@net-b.de>
PR fortran/34248
* trans-decl.c (generate_dependency_declarations): Check
for NULL pointers before accessing the string length.
2007-11-29 Tobias Burnus <burnus@net-b.de>
PR fortran/34248
* gfortran.dg/result_in_spec_3.f90: New.
Added:
trunk/gcc/testsuite/gfortran.dg/result_in_spec_3.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-decl.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34248
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/34248] ICE on assumed length character function
2007-11-27 12:30 [Bug fortran/34248] New: regression on assumed length character function francois dot jacq at irsn dot fr
` (2 preceding siblings ...)
2007-11-29 17:42 ` burnus at gcc dot gnu dot org
@ 2007-11-29 17:43 ` burnus at gcc dot gnu dot org
2007-11-30 17:56 ` jvdelisle at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: burnus at gcc dot gnu dot org @ 2007-11-29 17:43 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from burnus at gcc dot gnu dot org 2007-11-29 17:43 -------
FIXED on the trunk (4.3.0). I do not intent to backport the fix to 4.2.x or
4.1.x, but I can be convinced to do so.
--
burnus at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
GCC build triplet|20071126 (experimental) |
|[trunk revision 130423] |
GCC host triplet|i686 linux |
GCC target triplet|GNU Fortran (GCC) 4.3.0 |
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34248
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/34248] ICE on assumed length character function
2007-11-27 12:30 [Bug fortran/34248] New: regression on assumed length character function francois dot jacq at irsn dot fr
` (3 preceding siblings ...)
2007-11-29 17:43 ` burnus at gcc dot gnu dot org
@ 2007-11-30 17:56 ` jvdelisle at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: jvdelisle at gcc dot gnu dot org @ 2007-11-30 17:56 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from jvdelisle at gcc dot gnu dot org 2007-11-30 17:56 -------
Subject: Bug 34248
Author: jvdelisle
Date: Fri Nov 30 17:55:55 2007
New Revision: 130542
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130542
Log:
2007-11-30 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR fortran/34248
* gfortran.dg/result_in_spec_3.f90: Add dg-option -std=gnu.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/result_in_spec_3.f90
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34248
^ permalink raw reply [flat|nested] 6+ messages in thread
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2007-11-27 12:30 [Bug fortran/34248] New: regression on assumed length character function francois dot jacq at irsn dot fr
2007-11-27 13:49 ` [Bug fortran/34248] ICE " pault at gcc dot gnu dot org
2007-11-27 22:09 ` burnus at gcc dot gnu dot org
2007-11-29 17:42 ` burnus at gcc dot gnu dot org
2007-11-29 17:43 ` burnus at gcc dot gnu dot org
2007-11-30 17:56 ` jvdelisle at gcc dot gnu dot org
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