1// PR c++/51640
2
3class ex {};
4
5namespace t
6{
7  class ex2 : public ex {};
8}
9
10class ex2 : public ex {};
11
12void bar()
13{
14  using namespace t;
15
16  try {
17  } catch (ex2&) { // { dg-error "reference to 'ex2' is ambiguous" }
18  }
19}
20