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* [Bug c++/54764] New: In class initialization of non-static lambda member can't be used in class with default template paramer
@ 2012-10-01 6:43 leonid at volnitsky dot com
2012-10-01 11:55 ` [Bug c++/54764] " daniel.kruegler at googlemail dot com
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: leonid at volnitsky dot com @ 2012-10-01 6:43 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54764
Bug #: 54764
Summary: In class initialization of non-static lambda member
can't be used in class with default template paramer
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 compiles (FWIW), but rejected by GCC 4.7.1 and 4.8:
------------------------------------------------------------------
#include <functional>
template<class T=void>
struct c{
std::function<int(int)> f = [](int i){return i+i;};
};
int main() {}
-------------------------------------------------------------------
Error message:
t.cc:6:31: error: default argument for template parameter for class enclosing
‘struct __lambda0’
function<int(int)> f = [](int i){return i+i;};
^
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug c++/54764] In class initialization of non-static lambda member can't be used in class with default template paramer 2012-10-01 6:43 [Bug c++/54764] New: In class initialization of non-static lambda member can't be used in class with default template paramer leonid at volnitsky dot com @ 2012-10-01 11:55 ` daniel.kruegler at googlemail dot com 2012-10-01 12:09 ` paolo.carlini at oracle dot com ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: daniel.kruegler at googlemail dot com @ 2012-10-01 11:55 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54764 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> 2012-10-01 11:54:47 UTC --- Simplified to get rid of library dependencies: //------------------- template<class T = void> struct c { int (*f)(int) = [](int i){return i + i;}; }; //------------------- ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/54764] In class initialization of non-static lambda member can't be used in class with default template paramer 2012-10-01 6:43 [Bug c++/54764] New: In class initialization of non-static lambda member can't be used in class with default template paramer leonid at volnitsky dot com 2012-10-01 11:55 ` [Bug c++/54764] " daniel.kruegler at googlemail dot com @ 2012-10-01 12:09 ` paolo.carlini at oracle dot com 2013-03-12 21:41 ` jason at gcc dot gnu.org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: paolo.carlini at oracle dot com @ 2012-10-01 12:09 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54764 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2012-10-01 Blocks| |54367 Ever Confirmed|0 |1 --- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-10-01 12:09:09 UTC --- lambdas need work ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/54764] In class initialization of non-static lambda member can't be used in class with default template paramer 2012-10-01 6:43 [Bug c++/54764] New: In class initialization of non-static lambda member can't be used in class with default template paramer leonid at volnitsky dot com 2012-10-01 11:55 ` [Bug c++/54764] " daniel.kruegler at googlemail dot com 2012-10-01 12:09 ` paolo.carlini at oracle dot com @ 2013-03-12 21:41 ` jason at gcc dot gnu.org 2013-03-17 2:40 ` jason at gcc dot gnu.org 2013-03-23 5:09 ` jason at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: jason at gcc dot gnu.org @ 2013-03-12 21:41 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54764 Jason Merrill <jason at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED CC| |jason at gcc dot gnu.org AssignedTo|unassigned at gcc dot |jason at gcc dot gnu.org |gnu.org | ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/54764] In class initialization of non-static lambda member can't be used in class with default template paramer 2012-10-01 6:43 [Bug c++/54764] New: In class initialization of non-static lambda member can't be used in class with default template paramer leonid at volnitsky dot com ` (2 preceding siblings ...) 2013-03-12 21:41 ` jason at gcc dot gnu.org @ 2013-03-17 2:40 ` jason at gcc dot gnu.org 2013-03-23 5:09 ` jason at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: jason at gcc dot gnu.org @ 2013-03-17 2:40 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54764 --- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2013-03-17 02:39:05 UTC --- Author: jason Date: Sun Mar 17 02:38:50 2013 New Revision: 196742 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196742 Log: PR c++/54764 PR c++/55972 * name-lookup.h (tag_scope): Add ts_lambda. * semantics.c (begin_lambda_type): Use it. * decl.c (xref_tag_1): Set CLASSTYPE_LAMBDA_EXPR. * pt.c (check_default_tmpl_args): Ignore lambdas. (push_template_decl_real): Handle lambdas. * tree.c (no_linkage_check): Adjust lambda check. Added: trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-defarg4.C trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-nsdmi3.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/decl.c trunk/gcc/cp/name-lookup.h trunk/gcc/cp/pt.c trunk/gcc/cp/semantics.c trunk/gcc/cp/tree.c ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/54764] In class initialization of non-static lambda member can't be used in class with default template paramer 2012-10-01 6:43 [Bug c++/54764] New: In class initialization of non-static lambda member can't be used in class with default template paramer leonid at volnitsky dot com ` (3 preceding siblings ...) 2013-03-17 2:40 ` jason at gcc dot gnu.org @ 2013-03-23 5:09 ` jason at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: jason at gcc dot gnu.org @ 2013-03-23 5:09 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54764 Jason Merrill <jason at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED Target Milestone|--- |4.8.1 --- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2013-03-23 05:09:17 UTC --- Fixed for 4.8.1. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-03-23 5:09 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-10-01 6:43 [Bug c++/54764] New: In class initialization of non-static lambda member can't be used in class with default template paramer leonid at volnitsky dot com 2012-10-01 11:55 ` [Bug c++/54764] " daniel.kruegler at googlemail dot com 2012-10-01 12:09 ` paolo.carlini at oracle dot com 2013-03-12 21:41 ` jason at gcc dot gnu.org 2013-03-17 2:40 ` jason at gcc dot gnu.org 2013-03-23 5:09 ` jason at gcc dot gnu.org
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