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* [Bug c++/109382] New: Error inside virtual function of class template does not show point of instantiation @ 2023-04-03 2:16 zeratul976 at hotmail dot com 2023-04-03 2:23 ` [Bug c++/109382] " pinskia at gcc dot gnu.org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: zeratul976 at hotmail dot com @ 2023-04-03 2:16 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109382 Bug ID: 109382 Summary: Error inside virtual function of class template does not show point of instantiation Product: gcc Version: 12.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: zeratul976 at hotmail dot com Target Milestone: --- Given the following invalid code: struct Base { virtual void f() = 0; }; template <typename T> struct C : Base { void f() override { T().waldo(); } }; int main() { C<int> obj; } The error is printed as follows: $ g++-12 -c test.cpp test.cpp: In instantiation of ‘void C<T>::f() [with T = int]’: test.cpp:6:8: required from here test.cpp:7:9: error: request for member ‘waldo’ in ‘0’, which is of non-class type ‘int’ 7 | T().waldo(); | ~~~~^~~~~ The error is missing a "required from here" line pointing to `C<int> obj;`. If you imagine everything above main() being library code, it can be hard for a user to tell which line of the user's code is triggering the error in the library. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/109382] Error inside virtual function of class template does not show point of instantiation 2023-04-03 2:16 [Bug c++/109382] New: Error inside virtual function of class template does not show point of instantiation zeratul976 at hotmail dot com @ 2023-04-03 2:23 ` pinskia at gcc dot gnu.org 2023-04-03 2:27 ` pinskia at gcc dot gnu.org 2023-04-03 2:36 ` [Bug c++/109382] Error inside virtual function of class template does not show point of instantiation/use, only shows where the function is defined pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-04-03 2:23 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109382 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- clang gives: <source>:7:8: error: member reference base type 'int' is not a structure or union T().waldo(); ~~~^~~~~~ <source>:11:10: note: in instantiation of member function 'C<int>::f' requested here C<int> obj; ^ Which is definitely better. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/109382] Error inside virtual function of class template does not show point of instantiation 2023-04-03 2:16 [Bug c++/109382] New: Error inside virtual function of class template does not show point of instantiation zeratul976 at hotmail dot com 2023-04-03 2:23 ` [Bug c++/109382] " pinskia at gcc dot gnu.org @ 2023-04-03 2:27 ` pinskia at gcc dot gnu.org 2023-04-03 2:36 ` [Bug c++/109382] Error inside virtual function of class template does not show point of instantiation/use, only shows where the function is defined pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-04-03 2:27 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109382 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever confirmed|0 |1 Last reconfirmed| |2023-04-03 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Reduced slightly more: ``` template <typename T> struct C { virtual void f() { T().waldo(); } }; int main() { C<int> obj; } ``` ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/109382] Error inside virtual function of class template does not show point of instantiation/use, only shows where the function is defined. 2023-04-03 2:16 [Bug c++/109382] New: Error inside virtual function of class template does not show point of instantiation zeratul976 at hotmail dot com 2023-04-03 2:23 ` [Bug c++/109382] " pinskia at gcc dot gnu.org 2023-04-03 2:27 ` pinskia at gcc dot gnu.org @ 2023-04-03 2:36 ` pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-04-03 2:36 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109382 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |DUPLICATE --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Dup of bug 90508 in the end. *** This bug has been marked as a duplicate of bug 90508 *** ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2023-04-03 2:36 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2023-04-03 2:16 [Bug c++/109382] New: Error inside virtual function of class template does not show point of instantiation zeratul976 at hotmail dot com 2023-04-03 2:23 ` [Bug c++/109382] " pinskia at gcc dot gnu.org 2023-04-03 2:27 ` pinskia at gcc dot gnu.org 2023-04-03 2:36 ` [Bug c++/109382] Error inside virtual function of class template does not show point of instantiation/use, only shows where the function is defined pinskia at gcc dot gnu.org
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