1 #include "ns.h"
2 extern int func();
3 
4 // Note: the following function must be before the using.
5 void test_lookup_before_using_directive()
6 {
7   // BP_before_using_directive
8   std::printf("before using directive: func() = %d\n", func()); // eval func(), exp: 1
9 }
10 using namespace A;
11 void test_lookup_after_using_directive()
12 {
13   // BP_after_using_directive
14   //printf("func() = %d\n", func()); // eval func(), exp: error, ambiguous
15   std::printf("after using directive: func2() = %d\n", func2()); // eval func2(), exp: 3
16   std::printf("after using directive: ::func() = %d\n", ::func()); // eval ::func(), exp: 1
17   std::printf("after using directive: B::func() = %d\n", B::func()); // eval B::func(), exp: 4
18 }
19