1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 3 // Make sure we don't produce invalid IR. 4 // RUN: %clang_cc1 -emit-llvm-only %s 5 6 namespace test1 { 7 static void foo(); // expected-warning {{function 'test1::foo' has internal linkage but is not defined}} 8 template <class T> static void bar(); // expected-warning {{function 'test1::bar<int>' has internal linkage but is not defined}} 9 10 void test() { 11 foo(); // expected-note {{used here}} 12 bar<int>(); // expected-note {{used here}} 13 } 14 } 15 16 namespace test2 { 17 namespace { 18 void foo(); // expected-warning {{function 'test2::<anonymous namespace>::foo' has internal linkage but is not defined}} 19 extern int var; // expected-warning {{variable 'test2::<anonymous namespace>::var' has internal linkage but is not defined}} 20 template <class T> void bar(); // expected-warning {{function 'test2::<anonymous namespace>::bar<int>' has internal linkage but is not defined}} 21 } 22 void test() { 23 foo(); // expected-note {{used here}} 24 var = 0; // expected-note {{used here}} 25 bar<int>(); // expected-note {{used here}} 26 } 27 } 28 29 namespace test3 { 30 namespace { 31 void foo(); 32 extern int var; 33 template <class T> void bar(); 34 } 35 36 void test() { 37 foo(); 38 var = 0; 39 bar<int>(); 40 } 41 42 namespace { 43 void foo() {} 44 int var = 0; 45 template <class T> void bar() {} 46 } 47 } 48 49 namespace test4 { 50 namespace { 51 struct A { 52 A(); // expected-warning {{function 'test4::<anonymous namespace>::A::A' has internal linkage but is not defined}} 53 ~A();// expected-warning {{function 'test4::<anonymous namespace>::A::~A' has internal linkage but is not defined}} 54 virtual void foo(); // expected-warning {{function 'test4::<anonymous namespace>::A::foo' has internal linkage but is not defined}} 55 virtual void bar() = 0; 56 virtual void baz(); // expected-warning {{function 'test4::<anonymous namespace>::A::baz' has internal linkage but is not defined}} 57 }; 58 } 59 60 void test(A &a) { 61 a.foo(); // expected-note {{used here}} 62 a.bar(); 63 a.baz(); // expected-note {{used here}} 64 } 65 66 struct Test : A { 67 Test() {} // expected-note 2 {{used here}} 68 }; 69 } 70 71 // rdar://problem/9014651 72 namespace test5 { 73 namespace { 74 struct A {}; 75 } 76 77 template <class N> struct B { 78 static int var; // expected-warning {{variable 'test5::B<test5::<anonymous>::A>::var' has internal linkage but is not defined}} 79 static void foo(); // expected-warning {{function 'test5::B<test5::<anonymous>::A>::foo' has internal linkage but is not defined}} 80 }; 81 82 void test() { 83 B<A>::var = 0; // expected-note {{used here}} 84 B<A>::foo(); // expected-note {{used here}} 85 } 86 } 87 88 namespace test6 { 89 template <class T> struct A { 90 static const int zero = 0; 91 static const int one = 1; 92 static const int two = 2; 93 94 int value; 95 96 A() : value(zero) { 97 value = one; 98 } 99 }; 100 101 namespace { struct Internal; } 102 103 void test() { 104 A<Internal> a; 105 a.value = A<Internal>::two; 106 } 107 } 108