[Bug c++/46688] New: [4.6 Regression] g++ requires a function declaration when it should not

[roman at binarylife dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46688

           Summary: [4.6 Regression] g++ requires a function declaration
                    when it should not
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: ro...@binarylife.net


$ cat test.cc 
struct A {
   A(int);
};

struct B {
   B() {}
   A a[];
};
$ g++ test.cc 
test.cc: In constructor 'B::B()':
test.cc:6:8: error: no matching function for call to 'A::A()'
test.cc:2:4: note: candidates are: A::A(int)
test.cc:1:8: note:                 A::A(const A&)

The same problem with A a[0];

v4.5 is perfect in this respect.