Template problems with typename

Question

hi,
I'm working using Sun Studio 11, here's a problem I just encountered.
$ cat template.C
template <class T>
struct A {
public:
struct inside{
typedef T value_type;
template <class T>
class B {
public:
#ifdef USE_TYPENAME
void f(typename A<T>::inside::value_type v);
#else
void f(A<T>::value_type v);
#endif
#ifdef USE_TYPENAME
template <class T>
void B<T>::f(typename A<T>::inside::value_type v) { ; }
#else
template <class T>
void B<T>::f(A<T>::value_type v) { ; }
#endif
int
main()
return 0;
If I compiled it without the definition of USE_TYPENAME, there're only two warnings:
"template.C", line 16: Warning (Anachronism): Type names qualified by template parameters require "typename".
"template.C", line 28: Where: While specializing "B<T>".
"template.C", line 28: Where: Specialized in non-template code.
"template.C", line 28: Warning (Anachronism): Type names qualified by template parameters require "typename".
But if I compiled it with -DUSE_TYPENAME, there's an weird error:
$CC -DUSE_TYPENAME template.C
"template.C", line 23: Error: "B<T>::f(value_type)" was previously declared "B<T>::f(value_type)".
1 Error(s) detected.
$
Could anyone help me on this issue? Thanks!

Answer 1

It must be a bug in Sun Studio 11 because Sun Studio 12 C++ compiler (version 5.9) compiles the code fine.
In fact, applying latest patch to CC 5.8 will help. Patch IDs are 121018-11 for x86 and 121017-11 for sparc.