1*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -verify %s 2*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s 3*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s 4*67e74705SXin Li 5*67e74705SXin Li struct ConvToBool { 6*67e74705SXin Li operator bool() const; 7*67e74705SXin Li }; 8*67e74705SXin Li 9*67e74705SXin Li struct ConvToInt { 10*67e74705SXin Li operator int(); 11*67e74705SXin Li }; 12*67e74705SXin Li 13*67e74705SXin Li struct ExplicitConvToBool { 14*67e74705SXin Li explicit operator bool(); 15*67e74705SXin Li #if __cplusplus <= 199711L // C++03 or earlier modes 16*67e74705SXin Li // expected-warning@-2{{explicit conversion functions are a C++11 extension}} 17*67e74705SXin Li #endif 18*67e74705SXin Li }; 19*67e74705SXin Li test_conv_to_bool(ConvToBool ctb,ConvToInt cti,ExplicitConvToBool ecb)20*67e74705SXin Livoid test_conv_to_bool(ConvToBool ctb, ConvToInt cti, ExplicitConvToBool ecb) { 21*67e74705SXin Li if (ctb) { } 22*67e74705SXin Li if (cti) { } 23*67e74705SXin Li if (ecb) { } 24*67e74705SXin Li for (; ctb; ) { } 25*67e74705SXin Li for (; cti; ) { } 26*67e74705SXin Li for (; ecb; ) { } 27*67e74705SXin Li while (ctb) { }; 28*67e74705SXin Li while (cti) { } 29*67e74705SXin Li while (ecb) { } 30*67e74705SXin Li do { } while (ctb); 31*67e74705SXin Li do { } while (cti); 32*67e74705SXin Li do { } while (ecb); 33*67e74705SXin Li 34*67e74705SXin Li if (!ctb) { } 35*67e74705SXin Li if (!cti) { } 36*67e74705SXin Li if (!ecb) { } 37*67e74705SXin Li 38*67e74705SXin Li bool b1 = !ecb; 39*67e74705SXin Li if (ctb && ecb) { } 40*67e74705SXin Li bool b2 = ctb && ecb; 41*67e74705SXin Li if (ctb || ecb) { } 42*67e74705SXin Li bool b3 = ctb || ecb; 43*67e74705SXin Li } 44*67e74705SXin Li accepts_bool(bool)45*67e74705SXin Livoid accepts_bool(bool) { } // expected-note{{candidate function}} 46*67e74705SXin Li 47*67e74705SXin Li struct ExplicitConvToRef { 48*67e74705SXin Li explicit operator int&(); 49*67e74705SXin Li #if (__cplusplus <= 199711L) // C++03 or earlier modes 50*67e74705SXin Li // expected-warning@-2{{explicit conversion functions are a C++11 extension}} 51*67e74705SXin Li #endif 52*67e74705SXin Li }; 53*67e74705SXin Li test_explicit_bool(ExplicitConvToBool ecb)54*67e74705SXin Livoid test_explicit_bool(ExplicitConvToBool ecb) { 55*67e74705SXin Li bool b1(ecb); // okay 56*67e74705SXin Li bool b2 = ecb; // expected-error{{no viable conversion from 'ExplicitConvToBool' to 'bool'}} 57*67e74705SXin Li accepts_bool(ecb); // expected-error{{no matching function for call to}} 58*67e74705SXin Li } 59*67e74705SXin Li test_explicit_conv_to_ref(ExplicitConvToRef ecr)60*67e74705SXin Livoid test_explicit_conv_to_ref(ExplicitConvToRef ecr) { 61*67e74705SXin Li int& i1 = ecr; // expected-error{{non-const lvalue reference to type 'int' cannot bind to a value of unrelated type 'ExplicitConvToRef'}} 62*67e74705SXin Li int& i2(ecr); // okay 63*67e74705SXin Li } 64*67e74705SXin Li 65*67e74705SXin Li struct A { }; 66*67e74705SXin Li struct B { }; 67*67e74705SXin Li struct C { 68*67e74705SXin Li explicit operator A&(); 69*67e74705SXin Li #if __cplusplus <= 199711L // C++03 or earlier modes 70*67e74705SXin Li // expected-warning@-2{{explicit conversion functions are a C++11 extension}} 71*67e74705SXin Li #endif 72*67e74705SXin Li operator B&(); // expected-note{{candidate}} 73*67e74705SXin Li }; 74*67e74705SXin Li test_copy_init_conversions(C c)75*67e74705SXin Livoid test_copy_init_conversions(C c) { 76*67e74705SXin Li A &a = c; // expected-error{{no viable conversion from 'C' to 'A'}} 77*67e74705SXin Li B &b = c; // okay 78*67e74705SXin Li } 79