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[Bug c++/38759] Incorrect warning/error when compiling with a typedef'ed ptr return type
- From: "pinskia at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 7 Jan 2009 21:15:06 -0000
- Subject: [Bug c++/38759] Incorrect warning/error when compiling with a typedef'ed ptr return type
- References: <bug-38759-14836@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from pinskia at gmail dot com 2009-01-07 21:15 -------
Subject: Re: New: Incorrect warning/error when compiling with a typedef'ed
ptr return type
On Jan 7, 2009, at 12:44 PM, "gnu at bluedreamer dot com"
<gcc-bugzilla@gcc.gnu.org
> wrote:
> When a pointer to type is typedef'ed to a new type gcc incorrectly
> warns about
> const modifier if new typedef is used in function return type.
>
> gcc info:
> dluadrianc:/home/adrianc> gcc -v
> Using built-in specs.
> Target: i686-pc-linux-gnu
> Configured with: ../gcc-4.3.1/configure --prefix=/usr --enable-
> languages=c,c++
> --enable-shared --enable-threads=posix
> Thread model: posix
> gcc version 4.3.1 (GCC)
>
> Command line:g++ -save-temps -Wall -ansi -Wextra -pedantic -Werror
> const.cc
> Error message:
> cc1plus: warnings being treated as errors
> const.cc:10: error: type qualifiers ignored on function return type
>
> Code
> # 1 "const.cc"
> # 1 "<built-in>"
> # 1 "<command-line>"
> # 1 "const.cc"
> class Foo { };
>
> const Foo *func1()
> {
> return 0;
> }
>
> typedef Foo* Bar;
>
> const Bar func2()
The const here is applying to the pointer type and not what the
pointer points to so the warning is correct.
>
> {
> return 0;
> }
>
> int main(int , char *[])
> {
> func1();
> func2();
>
> return 0;
> }
>
>
> --
> Summary: Incorrect warning/error when compiling with a
> typedef'ed
> ptr return type
> Product: gcc
> Version: 4.3.1
> Status: UNCONFIRMED
> Severity: minor
> Priority: P3
> Component: c++
> AssignedTo: unassigned at gcc dot gnu dot org
> ReportedBy: gnu at bluedreamer dot com
> 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=38759
>
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38759