questions about cv-qualifier for function and references

[zhang qingshan]

std(N3126) 8.3.2/1 says that:

Cv-qualified references are ill-formed except when the cv-qualifiers
are introduced through
the use of a typedef (7.1.3) or of a template type argument (14.3), in
which case the cv-qualifiers are ignored.

Why the following code compiled failed on GCC 4.5.0 ?
  template <typename T> void foo (T const &);
  void baz ();
  foo (baz);

while
 template <typename T> void foo (T const &);
 void baz ();
 void Test() {
   foo (baz);
 }

successfully. Really wired.

another question is: what is cv-qualifier reference ? Your guys told me that:
const int &m; is not a cv-qualifier reference. Could you give me an
example on the cv-qualifier reference ? Thanks.