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* [Bug c++/66159] New: bogus warning for alias-declaration using elaborated-type-specifier
@ 2015-05-15 13:04 redi at gcc dot gnu.org
2020-05-26 15:55 ` [Bug c++/66159] " redi at gcc dot gnu.org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: redi at gcc dot gnu.org @ 2015-05-15 13:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66159
Bug ID: 66159
Summary: bogus warning for alias-declaration using
elaborated-type-specifier
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Target Milestone: ---
struct X { };
typedef struct ::X x1;
using x2 = struct ::X;
t.cc:5:21: warning: declaration ‘struct X’ does not declare anything
using x2 = struct ::X;
^
The two forms should be equivalent.
>From gcc-bugs-return-486331-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri May 15 13:17:37 2015
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From: "arjen.markus895 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/50221] Allocatable string length fails with array assignment
Date: Fri, 15 May 2015 13:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idP221
Arjen Markus <arjen.markus895 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |arjen.markus895 at gmail dot com
--- Comment #4 from Arjen Markus <arjen.markus895 at gmail dot com> ---
I had a probably related failure with the following program using 4.9.2 under
Cygwin.
The program:
! chk_alloc_string.f90 --
! Check if allocatable-length strings work in principle
!
program chk_alloc_string
implicit none
character(len=:), dimension(:), allocatable :: strings
integer :: i
allocate( character(10):: strings(1:3) )
!strings = [ "A", "C", "ABCDE", "V" ]
strings = [ character(len=4) :: "A", "C", "ABCDE", "V" ]
write(*,*) len(strings(1)), size(strings)
write(*,'(a)') strings
end program chk_alloc_string
The output:
4 4
ACAV
CAV
AV
V
where I expected:
4 4
A
C
ABCD
V
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/66159] bogus warning for alias-declaration using elaborated-type-specifier
2015-05-15 13:04 [Bug c++/66159] New: bogus warning for alias-declaration using elaborated-type-specifier redi at gcc dot gnu.org
@ 2020-05-26 15:55 ` redi at gcc dot gnu.org
2020-05-26 16:21 ` redi at gcc dot gnu.org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: redi at gcc dot gnu.org @ 2020-05-26 15:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66159
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Target Milestone|--- |11.0
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/66159] bogus warning for alias-declaration using elaborated-type-specifier
2015-05-15 13:04 [Bug c++/66159] New: bogus warning for alias-declaration using elaborated-type-specifier redi at gcc dot gnu.org
2020-05-26 15:55 ` [Bug c++/66159] " redi at gcc dot gnu.org
@ 2020-05-26 16:21 ` redi at gcc dot gnu.org
2020-05-27 9:47 ` redi at gcc dot gnu.org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: redi at gcc dot gnu.org @ 2020-05-26 16:21 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66159
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Hmm, my patch doesn't actually fix the bogus warning, it just makes it possible
to disable it. A front end wizard will need to fix the real bug.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/66159] bogus warning for alias-declaration using elaborated-type-specifier
2015-05-15 13:04 [Bug c++/66159] New: bogus warning for alias-declaration using elaborated-type-specifier redi at gcc dot gnu.org
2020-05-26 15:55 ` [Bug c++/66159] " redi at gcc dot gnu.org
2020-05-26 16:21 ` redi at gcc dot gnu.org
@ 2020-05-27 9:47 ` redi at gcc dot gnu.org
2020-06-17 19:27 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: redi at gcc dot gnu.org @ 2020-05-27 9:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66159
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Patch proposed:
https://gcc.gnu.org/pipermail/gcc-patches/2020-May/546603.html
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/66159] bogus warning for alias-declaration using elaborated-type-specifier
2015-05-15 13:04 [Bug c++/66159] New: bogus warning for alias-declaration using elaborated-type-specifier redi at gcc dot gnu.org
` (2 preceding siblings ...)
2020-05-27 9:47 ` redi at gcc dot gnu.org
@ 2020-06-17 19:27 ` cvs-commit at gcc dot gnu.org
2020-06-17 19:28 ` redi at gcc dot gnu.org
2021-08-04 3:26 ` pinskia at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-06-17 19:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66159
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <redi@gcc.gnu.org>:
https://gcc.gnu.org/g:d392babbeb6cb531ab8b1ec68fde9ffd36373a6e
commit r11-1459-gd392babbeb6cb531ab8b1ec68fde9ffd36373a6e
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Wed Jun 17 20:26:13 2020 +0100
c++: Fix bogus "does not declare anything" warning (PR 66159)
G++ gives a bogus warning for 'struct A; using B = struct ::A;'
complaining that the elaborated-type-specifier doesn't declare anything.
That's true, but it's not trying to declare struct ::A, just refer to it
unambiguously. Do not emit the warning unless we're actually parsing a
declaration.
gcc/cp/ChangeLog:
PR c++/66159
* parser.c (cp_parser_elaborated_type_specifier): Do not warn
unless in a declaration.
gcc/testsuite/ChangeLog:
PR c++/66159
* g++.dg/warn/forward-inner.C: Check alias-declaration using
elaborated-type-specifier.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/66159] bogus warning for alias-declaration using elaborated-type-specifier
2015-05-15 13:04 [Bug c++/66159] New: bogus warning for alias-declaration using elaborated-type-specifier redi at gcc dot gnu.org
` (3 preceding siblings ...)
2020-06-17 19:27 ` cvs-commit at gcc dot gnu.org
@ 2020-06-17 19:28 ` redi at gcc dot gnu.org
2021-08-04 3:26 ` pinskia at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: redi at gcc dot gnu.org @ 2020-06-17 19:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66159
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed on master.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/66159] bogus warning for alias-declaration using elaborated-type-specifier
2015-05-15 13:04 [Bug c++/66159] New: bogus warning for alias-declaration using elaborated-type-specifier redi at gcc dot gnu.org
` (4 preceding siblings ...)
2020-06-17 19:28 ` redi at gcc dot gnu.org
@ 2021-08-04 3:26 ` pinskia at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-04 3:26 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66159
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rutsky.vladimir at gmail dot com
--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 64259 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2021-08-04 3:26 UTC | newest]
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2015-05-15 13:04 [Bug c++/66159] New: bogus warning for alias-declaration using elaborated-type-specifier redi at gcc dot gnu.org
2020-05-26 15:55 ` [Bug c++/66159] " redi at gcc dot gnu.org
2020-05-26 16:21 ` redi at gcc dot gnu.org
2020-05-27 9:47 ` redi at gcc dot gnu.org
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