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* [Bug c++/42466] New: Multiple instantiations of template constructor fail @ 2009-12-22 18:05 apatterno at gmail dot com 2009-12-22 18:22 ` [Bug c++/42466] " pinskia at gcc dot gnu dot org ` (4 more replies) 0 siblings, 5 replies; 6+ messages in thread From: apatterno at gmail dot com @ 2009-12-22 18:05 UTC (permalink / raw) To: gcc-bugs The test code: template<class IntT, IntT X> struct A { IntT val_; A() : val_(X) {} A(IntT arg) : val_(arg) {} template<IntT X2> A(const A<IntT, X2>& other) : val_(other.val_) {} }; int main(int argc, char** argv) { A<int, 42> a; A<int, 100> b = a; A<unsigned, 42u> c; A<unsigned, 100u> d = c; A<long, 42l> e; A<long, 100l> f = e; } fails to compile on gcc 4.3.2: case.cpp: In function 'int main(int, char**)': case.cpp:19: error: conversion from 'A<unsigned int, 42u>' to non-scalar type 'A<unsigned int, 100u>' requested case.cpp:22: error: conversion from 'A<long int, 42l>' to non-scalar type 'A<long int, 100l>' requested The first conversion is OK, but the other two conversions are being flagged as errors. Even if I were to put the conversions in a different order, the same results... first one is OK, other two fail. -- Summary: Multiple instantiations of template constructor fail Product: gcc Version: 4.3.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: apatterno at gmail dot com GCC build triplet: i686-pc-cygwin GCC host triplet: i686-pc-cygwin GCC target triplet: i686-pc-cygwin http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42466 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/42466] Multiple instantiations of template constructor fail 2009-12-22 18:05 [Bug c++/42466] New: Multiple instantiations of template constructor fail apatterno at gmail dot com @ 2009-12-22 18:22 ` pinskia at gcc dot gnu dot org 2009-12-22 18:29 ` paolo dot carlini at oracle dot com ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu dot org @ 2009-12-22 18:22 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from pinskia at gcc dot gnu dot org 2009-12-22 18:21 ------- Confirmed, not a regression as far as I can tell either. -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Keywords| |rejects-valid Known to fail| |3.3 4.0.1 4.5.0 Last reconfirmed|0000-00-00 00:00:00 |2009-12-22 18:21:54 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42466 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/42466] Multiple instantiations of template constructor fail 2009-12-22 18:05 [Bug c++/42466] New: Multiple instantiations of template constructor fail apatterno at gmail dot com 2009-12-22 18:22 ` [Bug c++/42466] " pinskia at gcc dot gnu dot org @ 2009-12-22 18:29 ` paolo dot carlini at oracle dot com 2009-12-22 19:21 ` jason at gcc dot gnu dot org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: paolo dot carlini at oracle dot com @ 2009-12-22 18:29 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from paolo dot carlini at oracle dot com 2009-12-22 18:29 ------- Maybe Jason is willing to have a look. If it's legal, and I think it is, it's a pity that g++ users can't write this type of nifty constructor. -- paolo dot carlini at oracle dot com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jason at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42466 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/42466] Multiple instantiations of template constructor fail 2009-12-22 18:05 [Bug c++/42466] New: Multiple instantiations of template constructor fail apatterno at gmail dot com 2009-12-22 18:22 ` [Bug c++/42466] " pinskia at gcc dot gnu dot org 2009-12-22 18:29 ` paolo dot carlini at oracle dot com @ 2009-12-22 19:21 ` jason at gcc dot gnu dot org 2009-12-22 23:17 ` jason at gcc dot gnu dot org 2009-12-31 15:48 ` rguenth at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: jason at gcc dot gnu dot org @ 2009-12-22 19:21 UTC (permalink / raw) To: gcc-bugs -- jason at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |jason at gcc dot gnu dot org |dot org | Status|NEW |ASSIGNED Last reconfirmed|2009-12-22 18:21:54 |2009-12-22 19:21:35 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42466 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/42466] Multiple instantiations of template constructor fail 2009-12-22 18:05 [Bug c++/42466] New: Multiple instantiations of template constructor fail apatterno at gmail dot com ` (2 preceding siblings ...) 2009-12-22 19:21 ` jason at gcc dot gnu dot org @ 2009-12-22 23:17 ` jason at gcc dot gnu dot org 2009-12-31 15:48 ` rguenth at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: jason at gcc dot gnu dot org @ 2009-12-22 23:17 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from jason at gcc dot gnu dot org 2009-12-22 23:17 ------- Subject: Bug 42466 Author: jason Date: Tue Dec 22 23:16:46 2009 New Revision: 155411 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155411 Log: PR c++/42466 * pt.c (reduce_template_parm_level): Check the type before returning cached TEMPLATE_PARM_INDEX. Added: trunk/gcc/testsuite/g++.dg/template/nontype19.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/pt.c trunk/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42466 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/42466] Multiple instantiations of template constructor fail 2009-12-22 18:05 [Bug c++/42466] New: Multiple instantiations of template constructor fail apatterno at gmail dot com ` (3 preceding siblings ...) 2009-12-22 23:17 ` jason at gcc dot gnu dot org @ 2009-12-31 15:48 ` rguenth at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu dot org @ 2009-12-31 15:48 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from rguenth at gcc dot gnu dot org 2009-12-31 15:48 ------- Looks like this was fixed for 4.5. -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Known to fail|3.3 4.0.1 4.5.0 |3.3 4.0.1 Known to work| |4.5.0 Resolution| |FIXED Target Milestone|--- |4.5.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42466 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2009-12-31 15:48 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2009-12-22 18:05 [Bug c++/42466] New: Multiple instantiations of template constructor fail apatterno at gmail dot com 2009-12-22 18:22 ` [Bug c++/42466] " pinskia at gcc dot gnu dot org 2009-12-22 18:29 ` paolo dot carlini at oracle dot com 2009-12-22 19:21 ` jason at gcc dot gnu dot org 2009-12-22 23:17 ` jason at gcc dot gnu dot org 2009-12-31 15:48 ` rguenth at gcc dot gnu dot org
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