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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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