The program below is expected to exit with a status of 0. Only symbols from the
definition context are to be considered during unqualified lookup (bullet 1),
and only symbols defined in associated namespaces in both the definition and
instantiation context are to be considered during Koenig lookup (bullet 2). When
compiled with gcc 3.2, the program returns 1 instead, indicating that gcc fails
to correctly implement 14.6.4.2, p1, bullet 1 in that it considers symbols
outside the definition context of N::bar during unqualified lookup. EDG eccp -A
(i.e., strict mode) implements the rules correctly. For a discussion of the
rules see the email thread at c++std-core@research.att.com starting with
c++std-core-10009.

$ cat t.cpp; g++ -static t.cpp && ./a.out ; echo $?
namespace N {
template <class T> T foo (T) { return T (); }
template <class T> T bar (T t) { return foo (t); }
}

struct S { S (int i = 0): i_ (i) { } int i_; };

namespace N {
/* template <> */ S foo (S) { return S (1); }
}

int main ()
{
     return 1 == N::bar (S ()).i_;
} 
1