public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [Bug c++/52374] New: [C++11] Fails to transform id-expression into dependent base member access in lambda expression @ 2012-02-24 16:50 ai.azuma at gmail dot com 2012-02-24 17:20 ` [Bug c++/52374] " redi at gcc dot gnu.org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: ai.azuma at gmail dot com @ 2012-02-24 16:50 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52374 Bug #: 52374 Summary: [C++11] Fails to transform id-expression into dependent base member access in lambda expression Classification: Unclassified Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned@gcc.gnu.org ReportedBy: ai.azuma@gmail.com Created attachment 26742 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26742 Output of -v option and preprocessed file In the lambda expression's compound statement, id-expressions referring to non-static members should be transformed into class member access expressions by prefixing `(*this).'. However, GCC fails the transformation when id-expressions involved are qualified-ids and refer to dependent base members. A test case is as follows; //////////////////////////////////////////////////////////////////// struct B { int get() const { return 42; } }; template<typename X> struct D : public X { int get() const { return [this]() -> int { return X::get(); }(); } }; int main() { D<B> d; d.get(); } //////////////////////////////////////////////////////////////////// For the above mentioned well-formed code, 4.7.0 20120218 (experimental) with -std=c++11 complains as follows; main.cpp: In instantiation of 'D<X>::get() const [with X = B]::<lambda()>': main.cpp:10:29: required from 'struct D<X>::get() const [with X = B]::<lambda()>' main.cpp:10:65: required from 'int D<X>::get() const [with X = B]' main.cpp:16:9: required from here main.cpp:10:60: error: cannot call member function 'int B::get() const' without object `X::get' in the lambda expression should be implicitly transformed into `(*this).X::get', and the test case should compile successfully. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/52374] [C++11] Fails to transform id-expression into dependent base member access in lambda expression 2012-02-24 16:50 [Bug c++/52374] New: [C++11] Fails to transform id-expression into dependent base member access in lambda expression ai.azuma at gmail dot com @ 2012-02-24 17:20 ` redi at gcc dot gnu.org 2013-03-13 2:53 ` jason at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: redi at gcc dot gnu.org @ 2012-02-24 17:20 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52374 Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2012-02-24 Ever Confirmed|0 |1 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/52374] [C++11] Fails to transform id-expression into dependent base member access in lambda expression 2012-02-24 16:50 [Bug c++/52374] New: [C++11] Fails to transform id-expression into dependent base member access in lambda expression ai.azuma at gmail dot com 2012-02-24 17:20 ` [Bug c++/52374] " redi at gcc dot gnu.org @ 2013-03-13 2:53 ` jason at gcc dot gnu.org 2013-03-17 2:42 ` jason at gcc dot gnu.org 2013-03-23 19:24 ` jason at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: jason at gcc dot gnu.org @ 2013-03-13 2:53 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52374 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] 5+ messages in thread
* [Bug c++/52374] [C++11] Fails to transform id-expression into dependent base member access in lambda expression 2012-02-24 16:50 [Bug c++/52374] New: [C++11] Fails to transform id-expression into dependent base member access in lambda expression ai.azuma at gmail dot com 2012-02-24 17:20 ` [Bug c++/52374] " redi at gcc dot gnu.org 2013-03-13 2:53 ` jason at gcc dot gnu.org @ 2013-03-17 2:42 ` jason at gcc dot gnu.org 2013-03-23 19:24 ` jason at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: jason at gcc dot gnu.org @ 2013-03-17 2:42 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52374 --- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> 2013-03-17 02:39:18 UTC --- Author: jason Date: Sun Mar 17 02:39:04 2013 New Revision: 196743 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196743 Log: PR c++/52374 * pt.c (tsubst_qualified_id): Use current_nonlambda_class_type. Added: trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-this13.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/pt.c ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/52374] [C++11] Fails to transform id-expression into dependent base member access in lambda expression 2012-02-24 16:50 [Bug c++/52374] New: [C++11] Fails to transform id-expression into dependent base member access in lambda expression ai.azuma at gmail dot com ` (2 preceding siblings ...) 2013-03-17 2:42 ` jason at gcc dot gnu.org @ 2013-03-23 19:24 ` jason at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: jason at gcc dot gnu.org @ 2013-03-23 19:24 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52374 Jason Merrill <jason at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED Target Milestone|--- |4.8.1 --- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> 2013-03-23 19:24:48 UTC --- Fixed for 4.8.1. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2013-03-23 19:24 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-02-24 16:50 [Bug c++/52374] New: [C++11] Fails to transform id-expression into dependent base member access in lambda expression ai.azuma at gmail dot com 2012-02-24 17:20 ` [Bug c++/52374] " redi at gcc dot gnu.org 2013-03-13 2:53 ` jason at gcc dot gnu.org 2013-03-17 2:42 ` jason at gcc dot gnu.org 2013-03-23 19:24 ` jason at gcc dot gnu.org
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).