[Bug c++/48599] New: [C++0x] no diagnostic for invalid use of auto with array declarator

[Bug c++/48599] New: [C++0x] no diagnostic for invalid use of auto with array declarator

[hstong at ca dot ibm.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48599

           Summary: [C++0x] no diagnostic for invalid use of auto with
                    array declarator
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hstong@ca.ibm.com
              Host: powerpc64-unknown-linux-gnu
            Target: powerpc64-unknown-linux-gnu


A program is ill-formed if an array declarator is used to declare an entity
whose type contains the auto type specifier. A diagnostic is expected.

See subclause 8.3.4 [dcl.array] paragraph 1 in the 2011 FDIS.


### Self-contained source (a.cpp):
int v[1];
auto (*p)[1] = &v;


### Command to reproduce:
g++ -std=c++0x -Wall -W -pedantic -c a.cpp -o a.o


### Compiler output:
(No messages; return code 0)


### g++ -v output:
Using built-in specs.
Target: powerpc64-unknown-linux-gnu
Configured with: ../gcc-4.5.0/configure --prefix=/data/gcc
--program-suffix=-4.5.0 --disable-libssp --disable-libgcj
--enable-version-specific-runtime-libs --with-cpu=default32 --enable-secureplt
--with-long-double-128 --enable-shared --enable-__cxa_atexit
--enable-threads=posix --enable-languages=c,c++,fortran
Thread model: posix
gcc version 4.5.0 (GCC)

[Bug c++/48599] [C++0x] no diagnostic for invalid use of auto with array declarator

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48599

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.04.14 08:09:40
     Ever Confirmed|0                           |1

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-04-14 08:09:40 UTC ---
Confirmed

N.B. there are a lot of improvements to C++0x support in 4.6 relative to 4.5,
it's usually a good idea to check the latest version for C++0x bugs.  In this
case the bug is still there.

[Bug c++/48599] [C++0x] no diagnostic for invalid use of auto with array declarator

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48599

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |jason at gcc dot gnu.org
         AssignedTo|unassigned at gcc dot       |jason at gcc dot gnu.org
                   |gnu.org                     |

[Bug c++/48599] [C++0x] no diagnostic for invalid use of auto with array declarator

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48599

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> 2011-05-26 02:22:56 UTC ---
Author: jason
Date: Thu May 26 02:22:54 2011
New Revision: 174257

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174257
Log:
    PR c++/48599
    * decl.c (create_array_type_for_decl): Complain about array of auto.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/auto24.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/48599] [C++0x] no diagnostic for invalid use of auto with array declarator

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48599

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.7.0

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2011-05-26 03:09:15 UTC ---
Fixed for 4.7.