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* [Bug c++/55003] New: [C++11] Member function pointer not working as constexpr initializer
@ 2012-10-20 22:13 lee.mcculler at gmail dot com
2012-10-21 13:37 ` [Bug c++/55003] " daniel.kruegler at googlemail dot com
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: lee.mcculler at gmail dot com @ 2012-10-20 22:13 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55003
Bug #: 55003
Summary: [C++11] Member function pointer not working as
constexpr initializer
Classification: Unclassified
Product: gcc
Version: 4.7.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: lee.mcculler@gmail.com
This piece of code
template<typename T>
struct MemberGet{
static constexpr auto assign_operator = static_cast<T & (T::*)(const T
&)>(&T::operator=);
};
fails with this error:
error: declaration of ‘constexpr const auto
MemberGet<fpga::FPGAFilter>::assign_operator’ has no initializer
on with gcc -v:
Using built-in specs.
COLLECT_GCC=/usr/bin/g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.2/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /build/src/gcc-4.7.2/configure --prefix=/usr --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch
--enable-libstdcxx-time --enable-gnu-unique-object --enable-linker-build-id
--with-ppl --enable-cloog-backend=isl --disable-ppl-version-check
--disable-cloog-version-check --enable-lto --enable-gold --enable-ld=default
--enable-plugin --with-plugin-ld=ld.gold --with-linker-hash-style=gnu
--enable-multilib --disable-libssp --disable-build-with-cxx
--disable-build-poststage1-with-cxx --enable-checking=release
Thread model: posix
gcc version 4.7.2 (GCC)
I'm pretty certain that this code is valid C++ as it does compile in clang++
(built on top of this gcc version).
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/55003] [C++11] Member function pointer not working as constexpr initializer
2012-10-20 22:13 [Bug c++/55003] New: [C++11] Member function pointer not working as constexpr initializer lee.mcculler at gmail dot com
@ 2012-10-21 13:37 ` daniel.kruegler at googlemail dot com
2012-11-07 16:12 ` paolo.carlini at oracle dot com
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: daniel.kruegler at googlemail dot com @ 2012-10-21 13:37 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55003
Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |daniel.kruegler at
| |googlemail dot com
--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> 2012-10-21 13:36:28 UTC ---
The code presented code example seems incomplete, because it is accepted as
written. Here a complete code-example compiled with gcc 4.8.0 20121014
(experimental) using the compiler flags
-Wall -std=c++11 -pedantic
//---------------------
template<typename T>
struct MemberGet{
static constexpr auto assign_operator =
static_cast<T & (T::*)(const T &)>(&T::operator=);
};
struct X {};
MemberGet<X> mg;
//---------------------
"3|error: declaration of 'constexpr const auto MemberGet<X>::assign_operator'
has no initializer|"
I agree that this code should be accepted.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/55003] [C++11] Member function pointer not working as constexpr initializer
2012-10-20 22:13 [Bug c++/55003] New: [C++11] Member function pointer not working as constexpr initializer lee.mcculler at gmail dot com
2012-10-21 13:37 ` [Bug c++/55003] " daniel.kruegler at googlemail dot com
@ 2012-11-07 16:12 ` paolo.carlini at oracle dot com
2013-02-15 1:28 ` jason at gcc dot gnu.org
2013-02-15 11:24 ` paolo.carlini at oracle dot com
3 siblings, 0 replies; 5+ messages in thread
From: paolo.carlini at oracle dot com @ 2012-11-07 16:12 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55003
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |supercilious.dude at gmail
| |dot com
--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-11-07 16:11:28 UTC ---
*** Bug 55159 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/55003] [C++11] Member function pointer not working as constexpr initializer
2012-10-20 22:13 [Bug c++/55003] New: [C++11] Member function pointer not working as constexpr initializer lee.mcculler at gmail dot com
2012-10-21 13:37 ` [Bug c++/55003] " daniel.kruegler at googlemail dot com
2012-11-07 16:12 ` paolo.carlini at oracle dot com
@ 2013-02-15 1:28 ` jason at gcc dot gnu.org
2013-02-15 11:24 ` paolo.carlini at oracle dot com
3 siblings, 0 replies; 5+ messages in thread
From: jason at gcc dot gnu.org @ 2013-02-15 1:28 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55003
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2013-02-15 01:27:44 UTC ---
Author: jason
Date: Fri Feb 15 01:27:36 2013
New Revision: 196069
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196069
Log:
PR c++/55003
* decl.c (cp_finish_decl): Force instantiation of an
auto static data member.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/auto37.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/55003] [C++11] Member function pointer not working as constexpr initializer
2012-10-20 22:13 [Bug c++/55003] New: [C++11] Member function pointer not working as constexpr initializer lee.mcculler at gmail dot com
` (2 preceding siblings ...)
2013-02-15 1:28 ` jason at gcc dot gnu.org
@ 2013-02-15 11:24 ` paolo.carlini at oracle dot com
3 siblings, 0 replies; 5+ messages in thread
From: paolo.carlini at oracle dot com @ 2013-02-15 11:24 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55003
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.8.0
--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> 2013-02-15 11:24:22 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2013-02-15 11:24 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-10-20 22:13 [Bug c++/55003] New: [C++11] Member function pointer not working as constexpr initializer lee.mcculler at gmail dot com
2012-10-21 13:37 ` [Bug c++/55003] " daniel.kruegler at googlemail dot com
2012-11-07 16:12 ` paolo.carlini at oracle dot com
2013-02-15 1:28 ` jason at gcc dot gnu.org
2013-02-15 11:24 ` paolo.carlini at oracle dot com
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