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* [Bug c++/13927] New: confusing error message on ibad redeclaration of anon union
@ 2004-01-30 6:23 mec dot gnu at mindspring dot com
2004-01-30 12:22 ` [Bug c++/13927] [3.4/3.5 Regression] " pinskia at gcc dot gnu dot org
` (10 more replies)
0 siblings, 11 replies; 12+ messages in thread
From: mec dot gnu at mindspring dot com @ 2004-01-30 6:23 UTC (permalink / raw)
To: gcc-bugs
Consider this ill-formed program:
int main ()
{
union { int alpha; int beta; };
double alpha;
return 0;
}
This is bad because "alpha" is declared twice.
gcc HEAD says:
/berman/fsf/_today_/berman/install/target/native/gcc/gcc-HEAD-as-2.14-ld-2.14/bin/g++
-S au-3.cc
au-3.cc: In function `int main()':
au-3.cc:4: error: `double alpha' redeclared as different kind of symbol
au-3.cc:3: error: previous declaration of `#`alias_decl' not supported by
dump_decl#<declaration error>'
au-3.cc:4: error: declaration of `double alpha'
au-3.cc:3: error: conflicts with previous declaration `#`alias_decl' not
supported by dump_decl#<declaration error>'
This doesn't bother me because the line numbers do point to the right place so
that people can get work done. But it might be nicer if gcc could print a
better error message.
That is, I wouldn't mind a WONTFIX on this one, if fixing it would make the
compiler less elegant. But I suspect that there is code which doesn't know
about these strange types created by anon union variables so it might be good to
fix this.
For comparison, gcc 3.3.2 prints:
au-3.cc: In function `int main()':
au-3.cc:4: error: conflicting types for `double alpha'
au-3.cc:3: error: previous declaration as `int alpha'
--
Summary: confusing error message on ibad redeclaration of anon
union
Product: gcc
Version: 3.5.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: mec dot gnu at mindspring dot com
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13927
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/13927] [3.4/3.5 Regression] confusing error message on ibad redeclaration of anon union
2004-01-30 6:23 [Bug c++/13927] New: confusing error message on ibad redeclaration of anon union mec dot gnu at mindspring dot com
@ 2004-01-30 12:22 ` pinskia at gcc dot gnu dot org
2004-02-02 19:23 ` [Bug c++/13927] [3.4/3.5 Regression] confusing error message on bad " giovannibajo at libero dot it
` (9 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-01-30 12:22 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-01-30 12:22 -------
Confirmed, a regression. Looks like alias_decl needs to be supported by dump_decl.
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |gdr at gcc dot gnu dot org
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Keywords| |diagnostic
Last reconfirmed|0000-00-00 00:00:00 |2004-01-30 12:22:28
date| |
Summary|confusing error message on |[3.4/3.5 Regression]
|ibad redeclaration of anon |confusing error message on
|union |ibad redeclaration of anon
| |union
Target Milestone|--- |3.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13927
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/13927] [3.4/3.5 Regression] confusing error message on bad redeclaration of anon union
2004-01-30 6:23 [Bug c++/13927] New: confusing error message on ibad redeclaration of anon union mec dot gnu at mindspring dot com
2004-01-30 12:22 ` [Bug c++/13927] [3.4/3.5 Regression] " pinskia at gcc dot gnu dot org
@ 2004-02-02 19:23 ` giovannibajo at libero dot it
2004-02-02 20:43 ` giovannibajo at libero dot it
` (8 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: giovannibajo at libero dot it @ 2004-02-02 19:23 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From giovannibajo at libero dot it 2004-02-02 19:22 -------
Mine.
--
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |giovannibajo at libero dot
|dot org |it
Status|NEW |ASSIGNED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13927
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/13927] [3.4/3.5 Regression] confusing error message on bad redeclaration of anon union
2004-01-30 6:23 [Bug c++/13927] New: confusing error message on ibad redeclaration of anon union mec dot gnu at mindspring dot com
2004-01-30 12:22 ` [Bug c++/13927] [3.4/3.5 Regression] " pinskia at gcc dot gnu dot org
2004-02-02 19:23 ` [Bug c++/13927] [3.4/3.5 Regression] confusing error message on bad " giovannibajo at libero dot it
@ 2004-02-02 20:43 ` giovannibajo at libero dot it
2004-02-14 2:12 ` cvs-commit at gcc dot gnu dot org
` (7 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: giovannibajo at libero dot it @ 2004-02-02 20:43 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From giovannibajo at libero dot it 2004-02-02 20:43 -------
Patch here:
http://gcc.gnu.org/ml/gcc-patches/2004-02/msg00109.html
--
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13927
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/13927] [3.4/3.5 Regression] confusing error message on bad redeclaration of anon union
2004-01-30 6:23 [Bug c++/13927] New: confusing error message on ibad redeclaration of anon union mec dot gnu at mindspring dot com
` (2 preceding siblings ...)
2004-02-02 20:43 ` giovannibajo at libero dot it
@ 2004-02-14 2:12 ` cvs-commit at gcc dot gnu dot org
2004-02-14 2:15 ` cvs-commit at gcc dot gnu dot org
` (6 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-02-14 2:12 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-02-14 02:11 -------
Subject: Bug 13927
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: giovannibajo@gcc.gnu.org 2004-02-14 02:11:27
Modified files:
gcc/cp : ChangeLog error.c
Log message:
PR c++/13927
* error.c (dump_decl) <ALIAS_DECL>: Dump as simple declarations.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.3954&r2=1.3955
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/error.c.diff?cvsroot=gcc&r1=1.243&r2=1.244
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13927
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/13927] [3.4/3.5 Regression] confusing error message on bad redeclaration of anon union
2004-01-30 6:23 [Bug c++/13927] New: confusing error message on ibad redeclaration of anon union mec dot gnu at mindspring dot com
` (3 preceding siblings ...)
2004-02-14 2:12 ` cvs-commit at gcc dot gnu dot org
@ 2004-02-14 2:15 ` cvs-commit at gcc dot gnu dot org
2004-02-14 2:17 ` cvs-commit at gcc dot gnu dot org
` (5 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-02-14 2:15 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-02-14 02:15 -------
Subject: Bug 13927
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: giovannibajo@gcc.gnu.org 2004-02-14 02:15:21
Modified files:
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/g++.dg/other: error8.C
Log message:
PR c++/13927
* g++.dg/other/error8.C: New test.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.3497&r2=1.3498
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/other/error8.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13927
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/13927] [3.4/3.5 Regression] confusing error message on bad redeclaration of anon union
2004-01-30 6:23 [Bug c++/13927] New: confusing error message on ibad redeclaration of anon union mec dot gnu at mindspring dot com
` (4 preceding siblings ...)
2004-02-14 2:15 ` cvs-commit at gcc dot gnu dot org
@ 2004-02-14 2:17 ` cvs-commit at gcc dot gnu dot org
2004-02-14 2:19 ` cvs-commit at gcc dot gnu dot org
` (4 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-02-14 2:17 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-02-14 02:17 -------
Subject: Bug 13927
CVSROOT: /cvs/gcc
Module name: gcc
Branch: gcc-3_4-branch
Changes by: giovannibajo@gcc.gnu.org 2004-02-14 02:17:38
Modified files:
gcc/cp : ChangeLog error.c
Log message:
PR c++/13927
* error.c (dump_decl) <ALIAS_DECL>: Dump as simple declarations.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3892.2.49&r2=1.3892.2.50
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/error.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.241&r2=1.241.4.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13927
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/13927] [3.4/3.5 Regression] confusing error message on bad redeclaration of anon union
2004-01-30 6:23 [Bug c++/13927] New: confusing error message on ibad redeclaration of anon union mec dot gnu at mindspring dot com
` (5 preceding siblings ...)
2004-02-14 2:17 ` cvs-commit at gcc dot gnu dot org
@ 2004-02-14 2:19 ` cvs-commit at gcc dot gnu dot org
2004-02-14 2:23 ` [Bug c++/13927] [3.4/3.5 Regression] duplicated " giovannibajo at libero dot it
` (3 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-02-14 2:19 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-02-14 02:19 -------
Subject: Bug 13927
CVSROOT: /cvs/gcc
Module name: gcc
Branch: gcc-3_4-branch
Changes by: giovannibajo@gcc.gnu.org 2004-02-14 02:19:28
Modified files:
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/g++.dg/other: error8.C
Log message:
PR c++/13927
* g++.dg/other/error8.C: New test.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3389.2.73&r2=1.3389.2.74
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/other/error8.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.2.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13927
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/13927] [3.4/3.5 Regression] duplicated error message on bad redeclaration of anon union
2004-01-30 6:23 [Bug c++/13927] New: confusing error message on ibad redeclaration of anon union mec dot gnu at mindspring dot com
` (6 preceding siblings ...)
2004-02-14 2:19 ` cvs-commit at gcc dot gnu dot org
@ 2004-02-14 2:23 ` giovannibajo at libero dot it
2004-02-20 7:33 ` mmitchel at gcc dot gnu dot org
` (2 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: giovannibajo at libero dot it @ 2004-02-14 2:23 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From giovannibajo at libero dot it 2004-02-14 02:23 -------
I fixed the main regression, which was the unreadable error message. Now it
says:
pr13927.cc:12: error: `double alpha' redeclared as different kind of symbol
pr13927.cc:11: error: previous declaration of `int alpha'
pr13927.cc:12: error: declaration of `double alpha'
pr13927.cc:11: error: conflicts with previous declaration `int alpha'
The duplicated error message problem was discussed on gcc-patches as a followup
to my patch. Problem is, I don't fully understand that code, so I'm leaving
this bug to someone else. I updated the summary to reflect the new status.
The testcase (g++.dg/other/error8.C) already checks for the double diagnostic,
and it's currently xfailed.
--
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|giovannibajo at libero dot |unassigned at gcc dot gnu
|it |dot org
Status|ASSIGNED |NEW
Keywords|patch |
Summary|[3.4/3.5 Regression] |[3.4/3.5 Regression]
|confusing error message on |duplicated error message on
|bad redeclaration of anon |bad redeclaration of anon
|union |union
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13927
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/13927] [3.4/3.5 Regression] duplicated error message on bad redeclaration of anon union
2004-01-30 6:23 [Bug c++/13927] New: confusing error message on ibad redeclaration of anon union mec dot gnu at mindspring dot com
` (7 preceding siblings ...)
2004-02-14 2:23 ` [Bug c++/13927] [3.4/3.5 Regression] duplicated " giovannibajo at libero dot it
@ 2004-02-20 7:33 ` mmitchel at gcc dot gnu dot org
2004-02-20 8:57 ` cvs-commit at gcc dot gnu dot org
2004-02-20 8:58 ` mmitchel at gcc dot gnu dot org
10 siblings, 0 replies; 12+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2004-02-20 7:33 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From mmitchel at gcc dot gnu dot org 2004-02-20 07:33 -------
We'll not fix this for 3.4, or any 3.4.x release, because the fix might cause
breakage elsewhere and the regression is very minor.
I'll work on a fix for the mainline.
--
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |mark at codesourcery dot com
|dot org |
Status|NEW |ASSIGNED
Target Milestone|3.4.0 |3.5.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13927
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/13927] [3.4/3.5 Regression] duplicated error message on bad redeclaration of anon union
2004-01-30 6:23 [Bug c++/13927] New: confusing error message on ibad redeclaration of anon union mec dot gnu at mindspring dot com
` (8 preceding siblings ...)
2004-02-20 7:33 ` mmitchel at gcc dot gnu dot org
@ 2004-02-20 8:57 ` cvs-commit at gcc dot gnu dot org
2004-02-20 8:58 ` mmitchel at gcc dot gnu dot org
10 siblings, 0 replies; 12+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-02-20 8:57 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-02-20 08:57 -------
Subject: Bug 13927
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: mmitchel@gcc.gnu.org 2004-02-20 08:57:33
Modified files:
gcc/cp : ChangeLog decl.c name-lookup.c pt.c semantics.c
gcc/testsuite : ChangeLog
gcc/testsuite/g++.dg/other: error8.C
Added files:
gcc/testsuite/g++.dg/ext: packed5.C
gcc/testsuite/g++.dg/warn: Wunused-5.C
Log message:
PR c++/14199
* pt.c (tsubst_copy): Call mark_used for a PARM_DECL.
PR c++/14173
* semantics.c (begin_class_definition): Set TYPE_PACKED correctly
for all type variants.
PR c++/14173
* g++.dg/ext/packed5.C: New test.
PR c++/14199
* g++.dg/warn/Wunused-5.C: New test.
PR c++/13927
* decl.c (duplicate_decls): Return error_mark_node for invalid
redeclarations.
* name-lookup.c (push_namespace): Ignore the return value from
pushdecl.
* pt.c (push_template_decl_real): Robustify.
PR c++/13927
* g++.dg/other/error8.C: Remove XFAIL markers.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.3962&r2=1.3963
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/decl.c.diff?cvsroot=gcc&r1=1.1187&r2=1.1188
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/name-lookup.c.diff?cvsroot=gcc&r1=1.39&r2=1.40
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/pt.c.diff?cvsroot=gcc&r1=1.830&r2=1.831
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/semantics.c.diff?cvsroot=gcc&r1=1.388&r2=1.389
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.3523&r2=1.3524
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/ext/packed5.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/other/error8.C.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/warn/Wunused-5.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13927
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/13927] [3.4/3.5 Regression] duplicated error message on bad redeclaration of anon union
2004-01-30 6:23 [Bug c++/13927] New: confusing error message on ibad redeclaration of anon union mec dot gnu at mindspring dot com
` (9 preceding siblings ...)
2004-02-20 8:57 ` cvs-commit at gcc dot gnu dot org
@ 2004-02-20 8:58 ` mmitchel at gcc dot gnu dot org
10 siblings, 0 replies; 12+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2004-02-20 8:58 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From mmitchel at gcc dot gnu dot org 2004-02-20 08:58 -------
Fixed in GCC 3.5.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13927
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2004-02-20 8:58 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
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2004-01-30 6:23 [Bug c++/13927] New: confusing error message on ibad redeclaration of anon union mec dot gnu at mindspring dot com
2004-01-30 12:22 ` [Bug c++/13927] [3.4/3.5 Regression] " pinskia at gcc dot gnu dot org
2004-02-02 19:23 ` [Bug c++/13927] [3.4/3.5 Regression] confusing error message on bad " giovannibajo at libero dot it
2004-02-02 20:43 ` giovannibajo at libero dot it
2004-02-14 2:12 ` cvs-commit at gcc dot gnu dot org
2004-02-14 2:15 ` cvs-commit at gcc dot gnu dot org
2004-02-14 2:17 ` cvs-commit at gcc dot gnu dot org
2004-02-14 2:19 ` cvs-commit at gcc dot gnu dot org
2004-02-14 2:23 ` [Bug c++/13927] [3.4/3.5 Regression] duplicated " giovannibajo at libero dot it
2004-02-20 7:33 ` mmitchel at gcc dot gnu dot org
2004-02-20 8:57 ` cvs-commit at gcc dot gnu dot org
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