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* [Bug c++/53078] New: [C++11] Wrong diagnostic "no return statement in function returning non-void" on
@ 2012-04-22 23:28 M8R-gt1qwe at mailinator dot com
2012-04-23 0:22 ` [Bug c++/53078] [C++11] Wrong diagnostic "no return statement in function returning non-void" on lambdas paolo.carlini at oracle dot com
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: M8R-gt1qwe at mailinator dot com @ 2012-04-22 23:28 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53078
Bug #: 53078
Summary: [C++11] Wrong diagnostic "no return statement in
function returning non-void" on
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: M8R-gt1qwe@mailinator.com
GCC erroneously warns about a missing return in lambdas where the return type
is to be deduced as void.
Example:
$ cat a.c++
int main() { auto x = []{}; }
$ g++-4.8 -std=c++11 -Wall -Wextra -Werror -pedantic a.c++
a.c++: In lambda function:
a.c++:1:30: error: no return statement in function returning non-void
[-Werror=return-type]
cc1plus: all warnings being treated as errors
$
Neither of the following alternatives produces this diagnostic:
int main() { auto x = []{ return; }; }
int main() { auto x = []() -> void {}; }
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug c++/53078] [C++11] Wrong diagnostic "no return statement in function returning non-void" on lambdas 2012-04-22 23:28 [Bug c++/53078] New: [C++11] Wrong diagnostic "no return statement in function returning non-void" on M8R-gt1qwe at mailinator dot com @ 2012-04-23 0:22 ` paolo.carlini at oracle dot com 2012-04-23 3:59 ` M8R-gt1qwe at mailinator dot com ` (4 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: paolo.carlini at oracle dot com @ 2012-04-23 0:22 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53078 --- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-04-23 00:21:43 UTC --- Are you *really* sure you are using current 4.8? I get: paolo@poldo4:~/Work> g++ -std=c++11 -Wall -Wextra -Werror -pedantic 53078.C 53078.C: In function ‘int main()’: 53078.C:1:19: error: variable ‘x’ set but not used [-Werror=unused-but-set-variable] int main() { auto x = []{}; } ^ ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/53078] [C++11] Wrong diagnostic "no return statement in function returning non-void" on lambdas 2012-04-22 23:28 [Bug c++/53078] New: [C++11] Wrong diagnostic "no return statement in function returning non-void" on M8R-gt1qwe at mailinator dot com 2012-04-23 0:22 ` [Bug c++/53078] [C++11] Wrong diagnostic "no return statement in function returning non-void" on lambdas paolo.carlini at oracle dot com @ 2012-04-23 3:59 ` M8R-gt1qwe at mailinator dot com 2012-04-23 9:30 ` paolo.carlini at oracle dot com ` (3 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: M8R-gt1qwe at mailinator dot com @ 2012-04-23 3:59 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53078 --- Comment #2 from M8R-gt1qwe at mailinator dot com 2012-04-23 03:58:52 UTC --- Ooops. That will teach me to make sure I update before filing a bug :S I was running 20120401. You can close this. It doesn't manifest on 20120422. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/53078] [C++11] Wrong diagnostic "no return statement in function returning non-void" on lambdas 2012-04-22 23:28 [Bug c++/53078] New: [C++11] Wrong diagnostic "no return statement in function returning non-void" on M8R-gt1qwe at mailinator dot com 2012-04-23 0:22 ` [Bug c++/53078] [C++11] Wrong diagnostic "no return statement in function returning non-void" on lambdas paolo.carlini at oracle dot com 2012-04-23 3:59 ` M8R-gt1qwe at mailinator dot com @ 2012-04-23 9:30 ` paolo.carlini at oracle dot com 2012-04-24 8:34 ` mattipee at yahoo dot co.uk ` (2 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: paolo.carlini at oracle dot com @ 2012-04-23 9:30 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53078 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |WORKSFORME --- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-04-23 09:30:18 UTC --- Ok (4_7-branch is also fine) ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/53078] [C++11] Wrong diagnostic "no return statement in function returning non-void" on lambdas 2012-04-22 23:28 [Bug c++/53078] New: [C++11] Wrong diagnostic "no return statement in function returning non-void" on M8R-gt1qwe at mailinator dot com ` (2 preceding siblings ...) 2012-04-23 9:30 ` paolo.carlini at oracle dot com @ 2012-04-24 8:34 ` mattipee at yahoo dot co.uk 2012-04-24 9:29 ` paolo.carlini at oracle dot com 2012-04-24 9:32 ` paolo.carlini at oracle dot com 5 siblings, 0 replies; 7+ messages in thread From: mattipee at yahoo dot co.uk @ 2012-04-24 8:34 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53078 mattipee at yahoo dot co.uk changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mattipee at yahoo dot co.uk --- Comment #4 from mattipee at yahoo dot co.uk 2012-04-24 08:34:17 UTC --- Duplicate of Bug 52845 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/53078] [C++11] Wrong diagnostic "no return statement in function returning non-void" on lambdas 2012-04-22 23:28 [Bug c++/53078] New: [C++11] Wrong diagnostic "no return statement in function returning non-void" on M8R-gt1qwe at mailinator dot com ` (3 preceding siblings ...) 2012-04-24 8:34 ` mattipee at yahoo dot co.uk @ 2012-04-24 9:29 ` paolo.carlini at oracle dot com 2012-04-24 9:32 ` paolo.carlini at oracle dot com 5 siblings, 0 replies; 7+ messages in thread From: paolo.carlini at oracle dot com @ 2012-04-24 9:29 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53078 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |REOPENED Last reconfirmed| |2012-04-24 CC| |paolo.carlini at oracle dot | |com Resolution|WORKSFORME | Ever Confirmed|0 |1 --- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-04-24 09:28:33 UTC --- Re-open.. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/53078] [C++11] Wrong diagnostic "no return statement in function returning non-void" on lambdas 2012-04-22 23:28 [Bug c++/53078] New: [C++11] Wrong diagnostic "no return statement in function returning non-void" on M8R-gt1qwe at mailinator dot com ` (4 preceding siblings ...) 2012-04-24 9:29 ` paolo.carlini at oracle dot com @ 2012-04-24 9:32 ` paolo.carlini at oracle dot com 5 siblings, 0 replies; 7+ messages in thread From: paolo.carlini at oracle dot com @ 2012-04-24 9:32 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53078 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|REOPENED |RESOLVED Resolution| |DUPLICATE --- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-04-24 09:29:09 UTC --- ... to close as duplicate. *** This bug has been marked as a duplicate of bug 52845 *** ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2012-04-24 9:32 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-04-22 23:28 [Bug c++/53078] New: [C++11] Wrong diagnostic "no return statement in function returning non-void" on M8R-gt1qwe at mailinator dot com 2012-04-23 0:22 ` [Bug c++/53078] [C++11] Wrong diagnostic "no return statement in function returning non-void" on lambdas paolo.carlini at oracle dot com 2012-04-23 3:59 ` M8R-gt1qwe at mailinator dot com 2012-04-23 9:30 ` paolo.carlini at oracle dot com 2012-04-24 8:34 ` mattipee at yahoo dot co.uk 2012-04-24 9:29 ` paolo.carlini at oracle dot com 2012-04-24 9:32 ` paolo.carlini at oracle dot com
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