79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
|
// RUN: %clang_cc1 -fsyntax-only -verify %s
|
||
|
|
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
|
||
|
|
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
|
||
|
|
|
||
|
|
struct ConvToBool {
|
||
|
|
operator bool() const;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct ConvToInt {
|
||
|
|
operator int();
|
||
|
|
};
|
||
|
|
|
||
|
|
struct ExplicitConvToBool {
|
||
|
|
explicit operator bool(); // expected-note {{explicit}}
|
||
|
|
#if __cplusplus <= 199711L // C++03 or earlier modes
|
||
|
|
// expected-warning@-2{{explicit conversion functions are a C++11 extension}}
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
void test_conv_to_bool(ConvToBool ctb, ConvToInt cti, ExplicitConvToBool ecb) {
|
||
|
|
if (ctb) { }
|
||
|
|
if (cti) { }
|
||
|
|
if (ecb) { }
|
||
|
|
for (; ctb; ) { }
|
||
|
|
for (; cti; ) { }
|
||
|
|
for (; ecb; ) { }
|
||
|
|
while (ctb) { };
|
||
|
|
while (cti) { }
|
||
|
|
while (ecb) { }
|
||
|
|
do { } while (ctb);
|
||
|
|
do { } while (cti);
|
||
|
|
do { } while (ecb);
|
||
|
|
|
||
|
|
if (!ctb) { }
|
||
|
|
if (!cti) { }
|
||
|
|
if (!ecb) { }
|
||
|
|
|
||
|
|
bool b1 = !ecb;
|
||
|
|
if (ctb && ecb) { }
|
||
|
|
bool b2 = ctb && ecb;
|
||
|
|
if (ctb || ecb) { }
|
||
|
|
bool b3 = ctb || ecb;
|
||
|
|
}
|
||
|
|
|
||
|
|
void accepts_bool(bool) { } // expected-note{{candidate function}}
|
||
|
|
|
||
|
|
struct ExplicitConvToRef {
|
||
|
|
explicit operator int&(); // expected-note {{explicit}}
|
||
|
|
#if (__cplusplus <= 199711L) // C++03 or earlier modes
|
||
|
|
// expected-warning@-2{{explicit conversion functions are a C++11 extension}}
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
void test_explicit_bool(ExplicitConvToBool ecb) {
|
||
|
|
bool b1(ecb); // okay
|
||
|
|
bool b2 = ecb; // expected-error{{no viable conversion from 'ExplicitConvToBool' to 'bool'}}
|
||
|
|
accepts_bool(ecb); // expected-error{{no matching function for call to}}
|
||
|
|
}
|
||
|
|
|
||
|
|
void test_explicit_conv_to_ref(ExplicitConvToRef ecr) {
|
||
|
|
int& i1 = ecr; // expected-error{{no viable conversion from 'ExplicitConvToRef' to 'int'}}
|
||
|
|
int& i2(ecr); // okay
|
||
|
|
}
|
||
|
|
|
||
|
|
struct A { };
|
||
|
|
struct B { };
|
||
|
|
struct C {
|
||
|
|
explicit operator A&(); // expected-note {{explicit}}
|
||
|
|
#if __cplusplus <= 199711L // C++03 or earlier modes
|
||
|
|
// expected-warning@-2{{explicit conversion functions are a C++11 extension}}
|
||
|
|
#endif
|
||
|
|
operator B&(); // expected-note{{candidate}}
|
||
|
|
};
|
||
|
|
|
||
|
|
void test_copy_init_conversions(C c) {
|
||
|
|
A &a = c; // expected-error{{no viable conversion from 'C' to 'A'}}
|
||
|
|
B &b = c; // okay
|
||
|
|
}
|