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* [Bug fortran/33522] New: Incorrect warning messages about uninitialized variables
@ 2007-09-21 19:24 dir at lanl dot gov
2007-09-21 19:25 ` [Bug fortran/33522] " dir at lanl dot gov
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: dir at lanl dot gov @ 2007-09-21 19:24 UTC (permalink / raw)
To: gcc-bugs
These incorrect messages have been appearing lately. The variables are always
and only accessed in the save branch of the switch statements - so they will
never and can never be used uninitialized.
[dranta:~/tests/gfortran-D] dir% gfortran -c -O2 -Wuninitialized
module_files.f90
module_files.f90: In function 'my_sio_file_read_common':
module_files.f90:36: warning: 'scratch_r8.dim[1].stride' may be used
uninitialized in this function
module_files.f90:36: warning: 'scratch_r8.offset' may be used uninitialized in
this function
module_files.f90:35: warning: 'scratch_i4.dim[1].stride' may be used
uninitialized in this function
module_files.f90:35: warning: 'scratch_i4.offset' may be used uninitialized in
this function
[dranta:~/tests/gfortran-D] dir% gfortran --v
Using built-in specs.
Target: powerpc-apple-darwin8.10.0
Configured with: ../gcc/configure --disable-bootstrap --enable-multilib
--prefix=/usr/local/gfortran --enable-languages=c,fortran
Thread model: posix
gcc version 4.3.0 20070921 (experimental) (GCC)
--
Summary: Incorrect warning messages about uninitialized variables
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dir at lanl dot gov
GCC host triplet: powerpc-apple-darwin8.10.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33522
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/33522] Incorrect warning messages about uninitialized variables
2007-09-21 19:24 [Bug fortran/33522] New: Incorrect warning messages about uninitialized variables dir at lanl dot gov
@ 2007-09-21 19:25 ` dir at lanl dot gov
2007-09-22 13:57 ` fxcoudert at gcc dot gnu dot org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: dir at lanl dot gov @ 2007-09-21 19:25 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from dir at lanl dot gov 2007-09-21 19:25 -------
Created an attachment (id=14240)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14240&action=view)
The fortran source
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33522
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/33522] Incorrect warning messages about uninitialized variables
2007-09-21 19:24 [Bug fortran/33522] New: Incorrect warning messages about uninitialized variables dir at lanl dot gov
2007-09-21 19:25 ` [Bug fortran/33522] " dir at lanl dot gov
@ 2007-09-22 13:57 ` fxcoudert at gcc dot gnu dot org
2007-09-22 15:02 ` fxcoudert at gcc dot gnu dot org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: fxcoudert at gcc dot gnu dot org @ 2007-09-22 13:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from fxcoudert at gcc dot gnu dot org 2007-09-22 13:57 -------
*** Bug 33523 has been marked as a duplicate of this bug. ***
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33522
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/33522] Incorrect warning messages about uninitialized variables
2007-09-21 19:24 [Bug fortran/33522] New: Incorrect warning messages about uninitialized variables dir at lanl dot gov
2007-09-21 19:25 ` [Bug fortran/33522] " dir at lanl dot gov
2007-09-22 13:57 ` fxcoudert at gcc dot gnu dot org
@ 2007-09-22 15:02 ` fxcoudert at gcc dot gnu dot org
2007-09-22 16:55 ` fxcoudert at gcc dot gnu dot org
2007-09-22 16:59 ` fxcoudert at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: fxcoudert at gcc dot gnu dot org @ 2007-09-22 15:02 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from fxcoudert at gcc dot gnu dot org 2007-09-22 15:02 -------
Patch below fixes it:
Index: trans-types.c
===================================================================
--- trans-types.c (revision 128661)
+++ trans-types.c (working copy)
@@ -1088,16 +1088,19 @@ gfc_get_desc_dim_type (void)
decl = build_decl (FIELD_DECL,
get_identifier ("stride"), gfc_array_index_type);
DECL_CONTEXT (decl) = type;
+ TREE_NO_WARNING (decl) = 1;
fieldlist = decl;
decl = build_decl (FIELD_DECL,
get_identifier ("lbound"), gfc_array_index_type);
DECL_CONTEXT (decl) = type;
+ TREE_NO_WARNING (decl) = 1;
fieldlist = chainon (fieldlist, decl);
decl = build_decl (FIELD_DECL,
get_identifier ("ubound"), gfc_array_index_type);
DECL_CONTEXT (decl) = type;
+ TREE_NO_WARNING (decl) = 1;
fieldlist = chainon (fieldlist, decl);
/* Finish off the type. */
@@ -1389,12 +1392,14 @@ gfc_get_array_descriptor_base (int dimen
decl = build_decl (FIELD_DECL, get_identifier ("offset"),
gfc_array_index_type);
DECL_CONTEXT (decl) = fat_type;
+ TREE_NO_WARNING (decl) = 1;
fieldlist = chainon (fieldlist, decl);
/* Add the dtype component. */
decl = build_decl (FIELD_DECL, get_identifier ("dtype"),
gfc_array_index_type);
DECL_CONTEXT (decl) = fat_type;
+ TREE_NO_WARNING (decl) = 1;
fieldlist = chainon (fieldlist, decl);
/* Build the array type for the stride and bound components. */
@@ -1406,6 +1411,7 @@ gfc_get_array_descriptor_base (int dimen
decl = build_decl (FIELD_DECL, get_identifier ("dim"), arraytype);
DECL_CONTEXT (decl) = fat_type;
+ TREE_NO_WARNING (decl) = 1;
fieldlist = chainon (fieldlist, decl);
/* Finish off the type. */
--
fxcoudert at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fxcoudert at gcc dot gnu dot
| |org
AssignedTo|unassigned at gcc dot gnu |fxcoudert at gcc dot gnu dot
|dot org |org
Status|UNCONFIRMED |ASSIGNED
Ever Confirmed|0 |1
Keywords| |diagnostic, patch
Known to fail| |4.3.0
Last reconfirmed|0000-00-00 00:00:00 |2007-09-22 15:02:06
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33522
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/33522] Incorrect warning messages about uninitialized variables
2007-09-21 19:24 [Bug fortran/33522] New: Incorrect warning messages about uninitialized variables dir at lanl dot gov
` (2 preceding siblings ...)
2007-09-22 15:02 ` fxcoudert at gcc dot gnu dot org
@ 2007-09-22 16:55 ` fxcoudert at gcc dot gnu dot org
2007-09-22 16:59 ` fxcoudert at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: fxcoudert at gcc dot gnu dot org @ 2007-09-22 16:55 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from fxcoudert at gcc dot gnu dot org 2007-09-22 16:55 -------
Subject: Bug 33522
Author: fxcoudert
Date: Sat Sep 22 16:54:56 2007
New Revision: 128673
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=128673
Log:
PR fortran/33522
* trans-types.c (gfc_get_desc_dim_type): Mark artificial
variables with TREE_NO_WARNING.
(gfc_get_array_descriptor_base): Likewise.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-types.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33522
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/33522] Incorrect warning messages about uninitialized variables
2007-09-21 19:24 [Bug fortran/33522] New: Incorrect warning messages about uninitialized variables dir at lanl dot gov
` (3 preceding siblings ...)
2007-09-22 16:55 ` fxcoudert at gcc dot gnu dot org
@ 2007-09-22 16:59 ` fxcoudert at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: fxcoudert at gcc dot gnu dot org @ 2007-09-22 16:59 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from fxcoudert at gcc dot gnu dot org 2007-09-22 16:59 -------
Fixed.
--
fxcoudert at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33522
^ permalink raw reply [flat|nested] 6+ messages in thread
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2007-09-21 19:24 [Bug fortran/33522] New: Incorrect warning messages about uninitialized variables dir at lanl dot gov
2007-09-21 19:25 ` [Bug fortran/33522] " dir at lanl dot gov
2007-09-22 13:57 ` fxcoudert at gcc dot gnu dot org
2007-09-22 15:02 ` fxcoudert at gcc dot gnu dot org
2007-09-22 16:55 ` fxcoudert at gcc dot gnu dot org
2007-09-22 16:59 ` fxcoudert at gcc dot gnu dot org
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