1// RUN: %clang_cc1 -fsyntax-only -verify -Wno-c++11-extensions %s
2
3namespace fizbin { class Foobar {}; } // expected-note 2 {{'fizbin::Foobar' declared here}} \
4                                      // expected-note {{'Foobar' declared here}}
5Foobar *my_bar  // expected-error{{unknown type name 'Foobar'; did you mean 'fizbin::Foobar'?}}
6    = new Foobar; // expected-error{{unknown type name 'Foobar'; did you mean 'fizbin::Foobar'?}}
7fizbin::Foobar *my_foo = new fizbin::FooBar; // expected-error{{no type named 'FooBar' in namespace 'fizbin'; did you mean 'Foobar'?}}
8
9namespace barstool { int toFoobar() { return 1; } } // expected-note 3 {{'barstool::toFoobar' declared here}}
10int Double(int x) { return x + x; }
11void empty() {
12  Double(toFoobar()); // expected-error{{use of undeclared identifier 'toFoobar'; did you mean 'barstool::toFoobar'?}}
13}
14
15namespace fizbin {
16  namespace baztool { bool toFoobar() { return true; } } // expected-note{{'fizbin::baztool' declared here}}
17  namespace nested { bool moreFoobar() { return true; } } // expected-note{{'fizbin::nested::moreFoobar' declared here}}
18  namespace nested { bool lessFoobar() { return true; } } // expected-note{{'fizbin::nested' declared here}} \
19                                                          // expected-note{{'fizbin::nested::lessFoobar' declared here}}
20  class dummy { // expected-note 2 {{'fizbin::dummy' declared here}}
21   public:
22    static bool moreFoobar() { return false; } // expected-note{{'moreFoobar' declared here}}
23  };
24}
25void Check() { // expected-note{{'Check' declared here}}
26  if (toFoobar()) Double(7); // expected-error{{use of undeclared identifier 'toFoobar'; did you mean 'barstool::toFoobar'?}}
27  if (noFoobar()) Double(7); // expected-error{{use of undeclared identifier 'noFoobar'; did you mean 'barstool::toFoobar'?}}
28  if (moreFoobar()) Double(7); // expected-error{{use of undeclared identifier 'moreFoobar'; did you mean 'fizbin::nested::moreFoobar'}}
29  if (lessFoobar()) Double(7); // expected-error{{use of undeclared identifier 'lessFoobar'; did you mean 'fizbin::nested::lessFoobar'?}}
30  if (baztool::toFoobar()) Double(7); // expected-error{{use of undeclared identifier 'baztool'; did you mean 'fizbin::baztool'?}}
31  if (nested::moreFoobar()) Double(7); // expected-error{{use of undeclared identifier 'nested'; did you mean 'fizbin::nested'?}}
32  if (dummy::moreFoobar()) Double(7); // expected-error{{use of undeclared identifier 'dummy'; did you mean 'fizbin::dummy'?}}
33  if (dummy::mreFoobar()) Double(7); // expected-error{{use of undeclared identifier 'dummy'; did you mean 'fizbin::dummy'?}} \
34                                     // expected-error{{no member named 'mreFoobar' in 'fizbin::dummy'; did you mean 'moreFoobar'?}}
35  if (moFoobin()) Double(7); // expected-error{{use of undeclared identifier 'moFoobin'}}
36}
37
38void Alt() {
39  Cleck(); // expected-error{{use of undeclared identifier 'Cleck'; did you mean 'Check'?}}
40}
41
42namespace N {
43  namespace inner {
44    class myvector { /* ... */ }; // expected-note{{'inner::myvector' declared here}}
45  }
46
47  void f() {
48    myvector v; // expected-error{{unknown type name 'myvector'; did you mean 'inner::myvector'?}}
49  }
50}
51
52namespace realstd {
53  inline namespace __1 {
54    class mylinkedlist { /* ... */ }; // expected-note 2 {{'realstd::mylinkedlist' declared here}}
55  }
56
57  class linkedlist { /* ... */ };
58}
59
60void f() {
61  mylinkedlist v; // expected-error{{unknown type name 'mylinkedlist'; did you mean 'realstd::mylinkedlist'?}}
62  nylinkedlist w; // expected-error{{unknown type name 'nylinkedlist'; did you mean 'realstd::mylinkedlist'?}}
63}
64
65// Test case from http://llvm.org/bugs/show_bug.cgi?id=10318
66namespace llvm {
67 template <typename T> class GraphWriter {}; // expected-note 3{{declared here}}
68}
69
70struct S {};
71void bar() {
72 GraphWriter<S> x; //expected-error{{no template named 'GraphWriter'; did you mean 'llvm::GraphWriter'?}}
73 (void)new llvm::GraphWriter; // expected-error {{use of class template 'llvm::GraphWriter' requires template arguments}}
74 (void)new llvm::Graphwriter<S>; // expected-error {{no template named 'Graphwriter' in namespace 'llvm'; did you mean 'GraphWriter'?}}
75}
76
77// If namespace prefixes and character edits have the same weight, correcting
78// "fimish" to "N::famish" would have the same edit distance as correcting
79// "fimish" to "Finish". The result would be no correction being suggested
80// unless one of the corrections is given precedence (e.g. by filtering out
81// suggestions with added namespace qualifiers).
82namespace N { void famish(int); }
83void Finish(int); // expected-note {{'Finish' declared here}}
84void Start() {
85  fimish(7); // expected-error {{use of undeclared identifier 'fimish'; did you mean 'Finish'?}}
86}
87
88// But just eliminating the corrections containing added namespace qualifiers
89// won't work if both of the tied corrections have namespace qualifiers added.
90namespace N {
91void someCheck(int); // expected-note {{'N::someCheck' declared here}}
92namespace O { void somechock(int); }
93}
94void confusing() {
95  somechick(7); // expected-error {{use of undeclared identifier 'somechick'; did you mean 'N::someCheck'?}}
96}
97
98
99class Message {};
100namespace extra {
101  namespace util {
102    namespace MessageUtils {
103      bool Equivalent(const Message&, const Message&); // expected-note {{'extra::util::MessageUtils::Equivalent' declared here}} \
104                                                       // expected-note {{'::extra::util::MessageUtils::Equivalent' declared here}}
105    }
106  }
107}
108namespace util { namespace MessageUtils {} }
109bool nstest () {
110  Message a, b;
111  return util::MessageUtils::Equivalent(a, b); // expected-error {{no member named 'Equivalent' in namespace 'util::MessageUtils'; did you mean 'extra::util::MessageUtils::Equivalent'?}}
112}
113
114namespace util {
115  namespace extra {
116    bool nstest () {
117      Message a, b;
118      return MessageUtils::Equivalent(a, b); // expected-error {{no member named 'Equivalent' in namespace 'util::MessageUtils'; did you mean '::extra::util::MessageUtils::Equivalent'?}}
119    }
120  }
121}
122