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From: "bangerth at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/40155] New: [c++1x] variadic template pack problem Date: Fri, 15 May 2009 02:55:00 -0000 [thread overview] Message-ID: <bug-40155-102@http.gcc.gnu.org/bugzilla/> (raw) I'm fairly sure this should compile but it doesn't: --------------------- template <typename T> struct identity { typedef T type; }; template <typename RT, typename... A> int forward_call(RT (*) (A...), typename identity<A>::type...); int g (double); int i = forward_call(&g, 0); ------------------------------------- The problem is the expansion typename identity<A>::type... which should wrap identity<An>::type around each element An of the template pack A. I'm not entirely familiar with all the rules for template packs yet, but I think that this should work, taking the examples in http://www.jot.fm/issues/issue_2008_02/article2/ into account. Best W. -- Summary: [c++1x] variadic template pack problem Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: bangerth at gmail dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40155
next reply other threads:[~2009-05-15 2:55 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-05-15 2:55 bangerth at gmail dot com [this message] 2009-05-15 2:56 ` [Bug c++/40155] " bangerth at gmail dot com 2010-01-04 23:13 ` [Bug c++/40155] [c++0x] " dodji at gcc dot gnu dot org 2010-01-05 11:44 ` dodji at gcc dot gnu dot org 2010-01-05 13:20 ` bangerth at gmail dot com 2010-01-05 13:32 ` dodji at gcc dot gnu dot org 2010-01-07 19:22 ` dodji at gcc dot gnu dot org 2010-01-07 19:47 ` dodji at gcc dot gnu dot org 2010-02-07 4:02 ` hjl dot tools at gmail dot com
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