namespaces.cpp revision b7165589b2eafc4b48d09a5914e21604ae580256 
1// RUN: rm -rf %t
2// RUN: %clang_cc1 -x objective-c++ -fmodules -fmodules-cache-path=%t -I %S/Inputs %s -verify
3
4int &global(int);
5int &global2(int);
6
7namespace N6 {
8  char &f(char);
9}
10
11namespace N8 { }
12
13namespace LookupBeforeImport {
14  int &f(int);
15}
16void testEarly() {
17  int &r = LookupBeforeImport::f(1);
18}
19
20@import namespaces_left;
21@import namespaces_right;
22
23void test() {
24  int &ir1 = N1::f(1);
25  int &ir2 = N2::f(1);
26  int &ir3 = N3::f(1);
27  int &ir4 = global(1);
28  int &ir5 = ::global2(1);
29  float &fr1 = N1::f(1.0f);
30  float &fr2 = N2::f(1.0f);
31  float &fr3 = global(1.0f);
32  float &fr4 = ::global2(1.0f);
33  float &fr5 = LookupBeforeImport::f(1.0f);
34  double &dr1 = N2::f(1.0);
35  double &dr2 = N3::f(1.0);
36  double &dr3 = global(1.0);
37  double &dr4 = ::global2(1.0);
38  double &dr5 = LookupBeforeImport::f(1.0);
39}
40
41// Test namespaces merged without a common first declaration.
42namespace N5 {
43  char &f(char);
44}
45
46namespace N10 {
47  int &f(int);
48}
49
50void testMerged() {
51  int &ir1 = N5::f(17);
52  int &ir2 = N6::f(17);
53  int &ir3 = N7::f(17);
54  double &fr1 = N5::f(1.0);
55  double &fr2 = N6::f(1.0);
56  double &fr3 = N7::f(1.0);
57  char &cr1 = N5::f('a');
58  char &cr2 = N6::f('b');
59}
60
61// Test merging of declarations within namespaces that themselves were
62// merged without a common first declaration.
63void testMergedMerged() {
64  int &ir1 = N8::f(17);
65  int &ir2 = N9::f(17);
66  int &ir3 = N10::f(17);
67}
68
69// Test merging when using anonymous namespaces, which does not
70// actually perform any merging.
71void testAnonymousNotMerged() {
72  N11::consumeFoo(N11::getFoo()); // expected-error{{cannot initialize a parameter of type 'N11::<anonymous>::Foo *' with an rvalue of type 'N11::<anonymous>::Foo *'}}
73  N12::consumeFoo(N12::getFoo()); // expected-error{{cannot initialize a parameter of type 'N12::<anonymous>::Foo *' with an rvalue of type 'N12::<anonymous>::Foo *'}}
74}
75
76// expected-note@Inputs/namespaces-right.h:60 {{passing argument to parameter here}}
77// expected-note@Inputs/namespaces-right.h:67 {{passing argument to parameter here}}
78
79// Test that bringing in one name from an overload set does not hide the rest.
80void testPartialImportOfOverloadSet() {
81  void (*p)() = N13::p;
82  p();
83  N13::f(0);
84}
85