[Bug c++/53822] New: Diagnostic: spell out type in ambiguous call

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53822

             Bug #: 53822
           Summary: Diagnostic: spell out type in ambiguous call
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: gli...@gcc.gnu.org


Hello,

void f(float);
void f(double);
int main(){
  typedef unsigned NT;
  NT i=3;
  f(i);
}

mp.cc: In function ‘int main()’:
mp.cc:6:6: error: call of overloaded ‘f(NT&)’ is ambiguous
mp.cc:6:6: note: candidates are:
mp.cc:1:6: note: void f(float)
mp.cc:2:6: note: void f(double)

Notice that the error message never mentions "unsigned". In the middle of some
deep templated code, finding out what the problematic NT is can be hard.