[Bug c++/16713] New: call of template member function rejected

["marco at technoboredom dot net" <gcc-bugzilla at gcc dot gnu dot org>]

The following code compiles on Intel Compiler for Linux 8.0 and Microsoft Visual
C++ 7.1, but is rejected by gcc: 

/* BEGIN */
template<class T>
void fail1() 
{
  T::f<T>(); 
}
/* END */
results in the error message:

marco@gontscharow:~/tmp/gcc$ /opt/gcc-3.4.1/bin/g++ -c a.cc
a.cc: In function `void fail1()':
a.cc:5: error: expected primary-expression before '>' token
a.cc:5: error: expected primary-expression before ')' token

marco@gontscharow:~/tmp/gcc$ /opt/gcc-3.4.1/bin/g++ -v
Reading specs from /opt/gcc-3.4.1/lib/gcc/i686-pc-linux-gnu/3.4.1/specs
Configured with: /usr/local/src/gcc/source/gcc-3.4.1/configure -v
--prefix=/opt/gcc-3.4.1 --enable-shared --disable-checking --verbose
--with-gnu-as --with-gnu-ld --enable-__cta_atexit --enable-threads=posix
Thread model: posix
gcc version 3.4.1

Suspecting this as a parsing problem, I found this possible variation:

/* BEGIN */
template<class T>
void fail2() 
{
  T::f<0,0>(0); 
}

class X
{
public:
  template<int x, int y> void f(int); 
}; 
int x() 
{
  fail2<X>();
}
/*END*/

This results in the following message: 
marco@gontscharow:~/tmp/gcc$ /opt/gcc-3.4.1/bin/g++ -c a.cc
a.cc: In function `void fail2() [with T = X]':
a.cc:14:   instantiated from here
a.cc:4: error: invalid operands of types `<unknown type>' and `int' to binary
`operator<'

I therefore guess, that gcc parses: 
  T::f<0,0>(0); 
as 
  (T::f<0)  , (0>(0))

And fails in: 
  T::f<T>(); 
Because it thinks: 
  (T::f<T) >();

-- 
           Summary: call of template member function rejected
           Product: gcc
           Version: 3.4.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: marco at technoboredom dot net
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i486-slackware-linux
  GCC host triplet: i486-slackware-linux
GCC target triplet: i486-slackware-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16713