[Bug c++/31986] New: conversion-type-id should match in both contexts

["andrew dot stubbs at st dot com" <gcc-bugzilla at gcc dot gnu dot org>]

The following C++ program should not compile:

#include <stdio.h>

class C
{
public:
  typedef float T;
  operator T() {return 1;};
  operator int() {return 2;};
} c;

int
main ()
{
  typedef int T;
  printf ("%d\n", (T) c.operator T());  // invalid
  printf ("%d\n", T(c));
  printf ("%d\n", (T)c);
}

The C++ standard, clause 3.4.5, paragraph 7, says that the `T' should refer to
the same type in both `C' and `main'.

The output from this program, with GCC 4.1.1, is "1 2 2" (i.e. a `float' and
two `int's). This shows that the name `T' is significant here.


-- 
           Summary: conversion-type-id should match in both contexts
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: andrew dot stubbs at st dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31986