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Diffstat (limited to 'test/PCH/cxx-explicit-specifier.cpp')
-rw-r--r-- | test/PCH/cxx-explicit-specifier.cpp | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/test/PCH/cxx-explicit-specifier.cpp b/test/PCH/cxx-explicit-specifier.cpp new file mode 100644 index 0000000000..a800cfc9d5 --- /dev/null +++ b/test/PCH/cxx-explicit-specifier.cpp @@ -0,0 +1,124 @@ +// RUN: %clang_cc1 -std=c++2a -emit-pch %s -o %t-cxx2a +// RUN: %clang_cc1 -std=c++2a -DUSE_PCH -include-pch %t-cxx2a %s -ast-print -verify | FileCheck %s + +#ifndef USE_PCH +namespace inheriting_constructor { + struct S {}; + + template<typename X, typename Y> struct T { + template<typename A> + explicit((Y{}, true)) T(A &&a) {} + }; + + template<typename X, typename Y> struct U : T<X, Y> { + using T<X, Y>::T; + }; + + U<S, char> foo(char ch) { + return U<S, char>(ch); + } +} +#else +namespace inheriting_constructor { +U<S, char> a = foo('0'); +} + +//CHECK: explicit((char{} , true)) + +#endif + +namespace basic { +#ifndef USE_PCH + +struct B {}; + +struct A { + explicit A(int); + explicit(false) operator bool(); + explicit(true) operator B(); +}; +#else +//expected-note@-6+ {{candidate constructor}} +//expected-note@-9+ {{candidate constructor}} +//expected-note@-6+ {{candidate function}} + +//CHECK: explicit{{ +}}A( +//CHECK-NEXT: explicit(false){{ +}}operator +//CHECK-NEXT: explicit(true){{ +}}operator +A a = 0; //expected-error {{no viable conversion}} +A a1(0); + +bool b = a1; +B b1 = a1; //expected-error {{no viable conversion}} + +#endif +} + + +namespace templ { +#ifndef USE_PCH + +template<bool b> +struct B { + static constexpr bool value = b; +}; + +template<bool b> +struct A { + explicit(b) A(B<b>) {} + template<typename T> + explicit(b ^ T::value) operator T(); +}; +B<true> b_true; +B<false> b_false; +#else +//expected-note@-8 {{candidate template ignored}} +//expected-note@-8+ {{explicit constructor}} +//expected-note@-15+ {{candidate constructor}} +//expected-note@-8+ {{candidate conversion operator ignored}} +//expected-note@-9+ {{explicit(bool) specifier resolved to true}} +//expected-note@-12 {{explicit(bool) specifier resolved to true}} +//expected-note@-13+ {{candidate deductiong guide ignored}} + +//CHECK: explicit(b){{ +}}A +//CHECK: explicit(b{{ +}}^{{ +}}T::value){{ +}}operator + +A a = { b_true }; //expected-error {{class template argument deduction}} +A a0 = b_true; //expected-error {{no viable constructor or deduction guide}} +A a_true(b_true); +A a_false = b_false; + +B<true> b = a_true; +B<true> b1 = a_false; //expected-error {{no viable conversion}} +B<false> b2(a_true); + +#endif + +} + +namespace guide { + +#ifndef USE_PCH + +template<typename T> +struct A { + A(T); +}; + +template<typename T> +explicit(true) A(T) -> A<T>; + +explicit(false) A(int) -> A<int>; + +#else +//expected-note@-5 {{explicit deduction guide}} + +//CHECK: explicit(true){{ +}}A( +//CHECK: explicit(false){{ +}}A( + +A a = { 0.0 }; //expected-error {{explicit deduction guide}} +A a1 = { 0 }; + +#endif + +} |