[Bug c++/32440] New: Lookup fails to find later function overload if template has been defined earlier

[Bug c++/32440] New: Lookup fails to find later function overload if template has been defined earlier

[nicoara at roguewave dot com]

The following:

$ cat t.cpp
template< typename T >
int
baz (T const*)
{
    return 0;
}

template <class T>
void
bar(T* ptr)
{
    baz (*ptr);
}

int 
baz (int const&) 
{ 
    return 0;
}

void
foo () 
{ 
    int const n = 0;
    bar (&n);
}

fails to compile with gcc 4.2.0:

$ g++ -v; g++ -c t.cpp
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../gcc-4.2.0/configure --prefix=/opt/compilers/gcc-4.2.0
--enable-threads --enable-shared --enable-languages=c,c++
Thread model: posix
gcc version 4.2.0
t.cpp: In function 'void bar(T*) [with T = const int]':
t.cpp:25:   instantiated from here
t.cpp:12: error: no matching function for call to 'baz(const int&)'

Moving "int baz (int const&)" to top, or removing top function template avoids
the error. 

It is possible that this issue may be somehow related to the issue reported in
the bug report 31816.

Thanks,
Liviu


-- 
           Summary: Lookup fails to find later function overload if template
                    has been defined earlier
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: nicoara at roguewave dot com
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32440

[Bug c++/32440] Lookup fails to find later function overload if template has been defined earlier

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2007-06-20 21:17 -------
This is the way C++ works, yes before GCC 4.1.0, GCC did not work this way but
GCC was incorrect.

*** This bug has been marked as a duplicate of 2922 ***


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32440