73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
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// RUN: %clang_cc1 -fsyntax-only -verify %s
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namespace PR5909 {
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struct Foo {
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int x : 20;
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};
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bool Test(const int& foo);
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const Foo f = { 0 }; // It compiles without the 'const'.
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bool z = Test(f.x);
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}
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namespace PR6264 {
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typedef int (&T)[3];
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struct S
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{
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operator T ();
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};
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void f()
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{
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T bar = S();
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}
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}
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namespace PR6066 {
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struct B { };
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struct A : B {
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operator B*();
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operator B&(); // expected-warning{{conversion function converting 'PR6066::A' to its base class 'PR6066::B' will never be used}}
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};
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void f(B&); // no rvalues accepted
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void f(B*);
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int g() {
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f(A()); // calls f(B*)
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return 0;
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}
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}
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namespace test3 {
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struct A {
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unsigned bitX : 4; // expected-note 3 {{bit-field is declared here}}
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unsigned bitY : 4; // expected-note {{bit-field is declared here}}
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unsigned var;
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void foo();
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};
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void test(A *a) {
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unsigned &t0 = a->bitX; // expected-error {{non-const reference cannot bind to bit-field 'bitX'}}
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unsigned &t1 = (unsigned&) a->bitX; // expected-error {{C-style cast from bit-field lvalue to reference type 'unsigned int &'}}
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unsigned &t2 = const_cast<unsigned&>(a->bitX); // expected-error {{const_cast from bit-field lvalue to reference type 'unsigned int &'}}
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unsigned &t3 = (a->foo(), a->bitX); // expected-error {{non-const reference cannot bind to bit-field 'bitX'}}
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unsigned &t4 = (a->var ? a->bitX : a->bitY); // expected-error {{non-const reference cannot bind to bit-field}}
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unsigned &t5 = (a->var ? a->bitX : a->bitX); // expected-error {{non-const reference cannot bind to bit-field}}
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unsigned &t6 = (a->var ? a->bitX : a->var); // expected-error {{non-const reference cannot bind to bit-field}}
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unsigned &t7 = (a->var ? a->var : a->bitY); // expected-error {{non-const reference cannot bind to bit-field}}
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unsigned &t8 = (a->bitX = 3); // expected-error {{non-const reference cannot bind to bit-field 'bitX'}}
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unsigned &t9 = (a->bitY += 3); // expected-error {{non-const reference cannot bind to bit-field 'bitY'}}
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}
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}
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namespace explicit_ctor {
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struct A {};
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struct B { // expected-note 2{{candidate}}
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explicit B(const A&); // expected-note {{explicit constructor is not a candidate}}
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};
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A a;
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const B &b(a); // expected-error {{no viable conversion}}
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}
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