[Bug c++/53078] New: [C++11] Wrong diagnostic "no return statement in function returning non-void" on

[M8R-gt1qwe at mailinator dot com]

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: unassig...@gcc.gnu.org
        ReportedBy: m8r-gt1...@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 {}; }