1 // RUN: %clang_cc1 %s -fsyntax-only -verify -triple %itanium_abi_triple -Wweak-vtables -Wweak-template-vtables 2 // RUN: %clang_cc1 %s -fsyntax-only -triple %ms_abi_triple -Werror -Wno-weak-vtables -Wno-weak-template-vtables 3 4 struct A { // expected-warning {{'A' has no out-of-line virtual method definitions; its vtable will be emitted in every translation unit}} 5 virtual void f() { } 6 }; 7 8 template<typename T> struct B { 9 virtual void f() { } 10 }; 11 12 namespace { 13 struct C { 14 virtual void f() { } 15 }; 16 } 17 18 void f() { 19 struct A { 20 virtual void f() { } 21 }; 22 23 A a; 24 } 25 26 // Use the vtables 27 void uses_abc() { 28 A a; 29 B<int> b; 30 C c; 31 } 32 33 // <rdar://problem/9979458> 34 class Parent { 35 public: 36 Parent() {} 37 virtual ~Parent(); 38 virtual void * getFoo() const = 0; 39 }; 40 41 class Derived : public Parent { 42 public: 43 Derived(); 44 void * getFoo() const; 45 }; 46 47 class VeryDerived : public Derived { // expected-warning{{'VeryDerived' has no out-of-line virtual method definitions; its vtable will be emitted in every translation unit}} 48 public: 49 void * getFoo() const { return 0; } 50 }; 51 52 Parent::~Parent() {} 53 54 void uses_derived() { 55 Derived d; 56 VeryDerived vd; 57 } 58 59 template<typename T> struct TemplVirt { 60 virtual void f(); 61 }; 62 63 template class TemplVirt<float>; // expected-warning{{explicit template instantiation 'TemplVirt<float>' will emit a vtable in every translation unit}} 64 65 template<> struct TemplVirt<bool> { 66 virtual void f(); 67 }; 68 69 template<> struct TemplVirt<long> { // expected-warning{{'TemplVirt<long>' has no out-of-line virtual method definitions; its vtable will be emitted in every translation unit}} 70 virtual void f() {} 71 }; 72 73 void uses_templ() { 74 TemplVirt<float> f; 75 TemplVirt<bool> b; 76 TemplVirt<long> l; 77 } 78
