public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [Bug c++/54859] New: constexpr in template aliase rejected as non-constant @ 2012-10-08 17:05 leonid at volnitsky dot com 2012-10-08 17:26 ` [Bug c++/54859] [4.8 Regression] " jakub at gcc dot gnu.org ` (5 more replies) 0 siblings, 6 replies; 7+ messages in thread From: leonid at volnitsky dot com @ 2012-10-08 17:05 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54859 Bug #: 54859 Summary: constexpr in template aliase rejected as non-constant Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned@gcc.gnu.org ReportedBy: leonid@volnitsky.com clang-3.2 and gcc-4.7.2 compiles, gcc-4.8 rejects: -------------------------------------------------------------------------- // enbale_if template <bool B, class T = void> struct enable_if { typedef T type; }; template <class T> struct enable_if<false, T> {}; // template alias template<bool Cnd, class T=void> using eIF = typename enable_if <Cnd,T>::type; // f - this compiles template<bool B=true> typename enable_if<!B, int>::type f() { return 20; } // ff - error: integral expression ‘! B’ is not constant template<bool B=true> eIF<!B, int> ff() { return 20; } int main() {} --------------------------------------------------------------------------- This seams to be related to bug 54648, where I found bad commit to be 191412 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/54859] [4.8 Regression] constexpr in template aliase rejected as non-constant 2012-10-08 17:05 [Bug c++/54859] New: constexpr in template aliase rejected as non-constant leonid at volnitsky dot com @ 2012-10-08 17:26 ` jakub at gcc dot gnu.org 2012-10-21 22:54 ` paolo.carlini at oracle dot com ` (4 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu.org @ 2012-10-08 17:26 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54859 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2012-10-08 CC| |jakub at gcc dot gnu.org Target Milestone|--- |4.8.0 Summary|constexpr in template |[4.8 Regression] constexpr |aliase rejected as |in template aliase rejected |non-constant |as non-constant Ever Confirmed|0 |1 --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-10-08 17:25:42 UTC --- Indeed, this started being rejected with http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=191412 too. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/54859] [4.8 Regression] constexpr in template aliase rejected as non-constant 2012-10-08 17:05 [Bug c++/54859] New: constexpr in template aliase rejected as non-constant leonid at volnitsky dot com 2012-10-08 17:26 ` [Bug c++/54859] [4.8 Regression] " jakub at gcc dot gnu.org @ 2012-10-21 22:54 ` paolo.carlini at oracle dot com 2012-11-08 15:08 ` [Bug c++/54859] [4.8 Regression] constexpr in template alias " redi at gcc dot gnu.org ` (3 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: paolo.carlini at oracle dot com @ 2012-10-21 22:54 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54859 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |lucdanton at free dot fr --- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-10-21 22:53:21 UTC --- *** Bug 54912 has been marked as a duplicate of this bug. *** ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/54859] [4.8 Regression] constexpr in template alias rejected as non-constant 2012-10-08 17:05 [Bug c++/54859] New: constexpr in template aliase rejected as non-constant leonid at volnitsky dot com 2012-10-08 17:26 ` [Bug c++/54859] [4.8 Regression] " jakub at gcc dot gnu.org 2012-10-21 22:54 ` paolo.carlini at oracle dot com @ 2012-11-08 15:08 ` redi at gcc dot gnu.org 2012-11-09 16:08 ` jason at gcc dot gnu.org ` (2 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: redi at gcc dot gnu.org @ 2012-11-08 15:08 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54859 Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |rejects-valid CC| |redi at gcc dot gnu.org --- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-11-08 15:08:15 UTC --- template<unsigned N> using Num = int; template<typename... Types> using Count = Num<sizeof...(Types)>; Count<int, char, void> i; This claims sizeof is not a constant: e.C:5:37: error: integral expression 'sizeof (Types ...)' is not constant ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/54859] [4.8 Regression] constexpr in template alias rejected as non-constant 2012-10-08 17:05 [Bug c++/54859] New: constexpr in template aliase rejected as non-constant leonid at volnitsky dot com ` (2 preceding siblings ...) 2012-11-08 15:08 ` [Bug c++/54859] [4.8 Regression] constexpr in template alias " redi at gcc dot gnu.org @ 2012-11-09 16:08 ` jason at gcc dot gnu.org 2012-11-09 16:15 ` jason at gcc dot gnu.org 2012-11-09 18:24 ` paolo.carlini at oracle dot com 5 siblings, 0 replies; 7+ messages in thread From: jason at gcc dot gnu.org @ 2012-11-09 16:08 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54859 Jason Merrill <jason at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED AssignedTo|unassigned at gcc dot |jason at gcc dot gnu.org |gnu.org | ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/54859] [4.8 Regression] constexpr in template alias rejected as non-constant 2012-10-08 17:05 [Bug c++/54859] New: constexpr in template aliase rejected as non-constant leonid at volnitsky dot com ` (3 preceding siblings ...) 2012-11-09 16:08 ` jason at gcc dot gnu.org @ 2012-11-09 16:15 ` jason at gcc dot gnu.org 2012-11-09 18:24 ` paolo.carlini at oracle dot com 5 siblings, 0 replies; 7+ messages in thread From: jason at gcc dot gnu.org @ 2012-11-09 16:15 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54859 --- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2012-11-09 16:14:56 UTC --- Author: jason Date: Fri Nov 9 16:14:48 2012 New Revision: 193368 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193368 Log: PR c++/54859 * pt.c (check_instantiated_arg): Don't complain about dependent args. Added: trunk/gcc/testsuite/g++.dg/cpp0x/alias-decl-25.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/pt.c trunk/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/54859] [4.8 Regression] constexpr in template alias rejected as non-constant 2012-10-08 17:05 [Bug c++/54859] New: constexpr in template aliase rejected as non-constant leonid at volnitsky dot com ` (4 preceding siblings ...) 2012-11-09 16:15 ` jason at gcc dot gnu.org @ 2012-11-09 18:24 ` paolo.carlini at oracle dot com 5 siblings, 0 replies; 7+ messages in thread From: paolo.carlini at oracle dot com @ 2012-11-09 18:24 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54859 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED CC|jason at gcc dot gnu.org | Resolution| |FIXED --- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-11-09 18:23:57 UTC --- This is fixed then. ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2012-11-09 18:24 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-10-08 17:05 [Bug c++/54859] New: constexpr in template aliase rejected as non-constant leonid at volnitsky dot com 2012-10-08 17:26 ` [Bug c++/54859] [4.8 Regression] " jakub at gcc dot gnu.org 2012-10-21 22:54 ` paolo.carlini at oracle dot com 2012-11-08 15:08 ` [Bug c++/54859] [4.8 Regression] constexpr in template alias " redi at gcc dot gnu.org 2012-11-09 16:08 ` jason at gcc dot gnu.org 2012-11-09 16:15 ` jason at gcc dot gnu.org 2012-11-09 18:24 ` paolo.carlini at oracle dot com
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).