https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77496
--- Comment #3 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
The "correct" test case emits two nearly identical -Wpedantic warnings:
One when the template is parsed, and one when the template is instantiated.
The second one is unnecessary, IMHO.
template <class x>
class z : x
{
public:
bool zz () { return false; }
int f () { return zz () ? : 1; } // { dg-warning "omitted middle operand" }
};
class t
{
};
int
main ()
{
z<t> x;
return x.f ();
}
g++ -Wpedantic pr77496.C
pr77496.C: In member function 'int z<x>::f()':
pr77496.C:9:29: warning: ISO C++ does not allow ?: with omitted middle operand
[-Wpedantic]
int f () { return zz () ? : 1; } // { dg-warning "omitted middle operand" }
^
pr77496.C: In instantiation of 'int z<x>::f() [with x = t]':
pr77496.C:20:15: required from here
pr77496.C:9:27: warning: ISO C++ forbids omitting the middle term of a ?:
expression [-Wpedantic]
int f () { return zz () ? : 1; } // { dg-warning "omitted middle operand" }
^
