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* [Bug c++/95657] New: Bogus error message in "auto" with -std=c++11 @ 2020-06-12 14:42 haoxintu at gmail dot com 2020-06-15 10:00 ` [Bug c++/95657] Duplicate error messages for decltype(auto) " redi at gcc dot gnu.org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: haoxintu at gmail dot com @ 2020-06-12 14:42 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95657 Bug ID: 95657 Summary: Bogus error message in "auto" with -std=c++11 Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: haoxintu at gmail dot com Target Milestone: --- This code bug.cc decltype (auto) foo( decltype (auto) a ){ } in GCC-trunk $g++ -c -std=c++11 bug.cc bug.cc:1:11: error: expected primary-expression before ‘auto’ 1 | decltype (auto) foo( decltype (auto) a ){ } | ^~~~ bug.cc:1:33: error: use of ‘auto’ in parameter declaration only available with ‘-std=c++14’ or ‘-std=gnu++14’ 1 | decltype (auto) foo( decltype (auto) a ){ } | ^~~~ bug.cc:1:33: error: use of ‘auto’ in parameter declaration only available with ‘-std=c++14’ or ‘-std=gnu++14’ bug.cc:1:33: error: use of ‘auto’ in parameter declaration only available with ‘-std=c++14’ or ‘-std=gnu++14’ bug.cc:1:33: error: use of ‘auto’ in parameter declaration only available with ‘-std=c++14’ or ‘-std=gnu++14’ bug.cc:1:33: error: use of ‘auto’ in parameter declaration only available with ‘-std=c++14’ or ‘-std=gnu++14’ bug.cc:1:33: error: use of ‘auto’ in parameter declaration only available with ‘-std=c++14’ or ‘-std=gnu++14’ bug.cc:1:33: error: expected primary-expression before ‘auto’ bug.cc:1:22: error: expected primary-expression before ‘decltype’ 1 | decltype (auto) foo( decltype (auto) a ){ } | ^~~~~~~~~~~~~~~~ I am sure there were some duplicate error messages about "error: use of ‘auto’ in parameter declaration only available with ‘-std=c++14’ or ‘-std=gnu++14’". While in clang $clang++ -c -std=c++11 bug.cc bug.cc:1:11: warning: 'decltype(auto)' type specifier is a C++14 extension [-Wc++14-extensions] decltype (auto) foo( decltype (auto) a ){ } ^ bug.cc:1:33: warning: 'decltype(auto)' type specifier is a C++14 extension [-Wc++14-extensions] decltype (auto) foo( decltype (auto) a ){ } ^ bug.cc:1:22: error: 'decltype(auto)' not allowed in function prototype decltype (auto) foo( decltype (auto) a ){ } ^~~~~~~~ bug.cc:1:1: error: deduced return types are a C++14 extension decltype (auto) foo( decltype (auto) a ){ } ^ 2 warnings and 2 errors generated. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/95657] Duplicate error messages for decltype(auto) with -std=c++11 2020-06-12 14:42 [Bug c++/95657] New: Bogus error message in "auto" with -std=c++11 haoxintu at gmail dot com @ 2020-06-15 10:00 ` redi at gcc dot gnu.org 2021-09-07 17:12 ` pinskia at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: redi at gcc dot gnu.org @ 2020-06-15 10:00 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95657 Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Last reconfirmed| |2020-06-15 Summary|Bogus error message in |Duplicate error messages |"auto" with -std=c++11 |for decltype(auto) with | |-std=c++11 Severity|normal |minor Status|UNCONFIRMED |NEW --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- The error isn't bogus, it's just shown too many times. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/95657] Duplicate error messages for decltype(auto) with -std=c++11 2020-06-12 14:42 [Bug c++/95657] New: Bogus error message in "auto" with -std=c++11 haoxintu at gmail dot com 2020-06-15 10:00 ` [Bug c++/95657] Duplicate error messages for decltype(auto) " redi at gcc dot gnu.org @ 2021-09-07 17:12 ` pinskia at gcc dot gnu.org 2021-12-08 14:38 ` marxin at gcc dot gnu.org 2021-12-08 16:17 ` pinskia at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-09-07 17:12 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95657 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Looks fixed in GCC 11: <source>:1:1: error: 'decltype(auto)' type specifier only available with '-std=c++14' or '-std=gnu++14' 1 | decltype (auto) foo( decltype (auto) a ){ } | ^~~~~~~~ <source>:1:22: error: 'decltype(auto)' type specifier only available with '-std=c++14' or '-std=gnu++14' 1 | decltype (auto) foo( decltype (auto) a ){ } | ^~~~~~~~ <source>:1:38: error: expected initializer before 'a' 1 | decltype (auto) foo( decltype (auto) a ){ } | ^ ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/95657] Duplicate error messages for decltype(auto) with -std=c++11 2020-06-12 14:42 [Bug c++/95657] New: Bogus error message in "auto" with -std=c++11 haoxintu at gmail dot com 2020-06-15 10:00 ` [Bug c++/95657] Duplicate error messages for decltype(auto) " redi at gcc dot gnu.org 2021-09-07 17:12 ` pinskia at gcc dot gnu.org @ 2021-12-08 14:38 ` marxin at gcc dot gnu.org 2021-12-08 16:17 ` pinskia at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: marxin at gcc dot gnu.org @ 2021-12-08 14:38 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95657 Martin Liška <marxin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- See Also| |https://gcc.gnu.org/bugzill | |a/show_bug.cgi?id=96103 Keywords|needs-bisection | CC| |marxin at gcc dot gnu.org, | |mpolacek at gcc dot gnu.org --- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> --- Fixed in r11-1913-ga51de1af063b0a92. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/95657] Duplicate error messages for decltype(auto) with -std=c++11 2020-06-12 14:42 [Bug c++/95657] New: Bogus error message in "auto" with -std=c++11 haoxintu at gmail dot com ` (2 preceding siblings ...) 2021-12-08 14:38 ` marxin at gcc dot gnu.org @ 2021-12-08 16:17 ` pinskia at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-12-08 16:17 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95657 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED Target Milestone|--- |11.0 --- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Martin Liška from comment #3) > Fixed in r11-1913-ga51de1af063b0a92. So the fix was by design of the patch so closing as fixed. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-12-08 16:17 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2020-06-12 14:42 [Bug c++/95657] New: Bogus error message in "auto" with -std=c++11 haoxintu at gmail dot com 2020-06-15 10:00 ` [Bug c++/95657] Duplicate error messages for decltype(auto) " redi at gcc dot gnu.org 2021-09-07 17:12 ` pinskia at gcc dot gnu.org 2021-12-08 14:38 ` marxin at gcc dot gnu.org 2021-12-08 16:17 ` pinskia at gcc dot gnu.org
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