1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119
|
// 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 X1 { // has no implicit default constructor
X1(int);
};
struct X2 : X1 {
#if __cplusplus <= 199711L
// expected-note@-2 2 {{'X2' declared here}}
#endif
X2(int);
};
struct X3 : public X2 {
#if __cplusplus <= 199711L
// expected-error@-2 {{implicit default constructor for 'X3' must explicitly initialize the base class 'X2' which does not have a default constructor}}
#else
// expected-note@-4 {{default constructor of 'X3' is implicitly deleted because base class 'X2' has no default constructor}}
#endif
};
X3 x3;
#if __cplusplus <= 199711L
// expected-note@-2 {{first required here}}
#else
// expected-error@-4 {{call to implicitly-deleted default constructor of 'X3'}}
#endif
struct X4 {
#if __cplusplus <= 199711L
// expected-error@-2 {{must explicitly initialize the member 'x2'}}
// expected-error@-3 {{must explicitly initialize the reference member 'rx2'}}
#endif
X2 x2;
#if __cplusplus <= 199711L
// expected-note@-2 {{member is declared here}}
#else
// expected-note@-4 {{default constructor of 'X4' is implicitly deleted because field 'x2' has no default constructor}}
#endif
X2 & rx2;
#if __cplusplus <= 199711L
// expected-note@-2 {{declared here}}
#endif
};
X4 x4;
#if __cplusplus <= 199711L
// expected-note@-2 {{first required here}}
#else
// expected-error@-4 {{call to implicitly-deleted default constructor of 'X4'}}
#endif
struct Y1 { // has no implicit default constructor
Y1(int);
};
struct Y2 : Y1 {
Y2(int);
Y2();
};
struct Y3 : public Y2 {
};
Y3 y3;
struct Y4 {
Y2 y2;
};
Y4 y4;
// More tests
struct Z1 {
#if __cplusplus <= 199711L
// expected-error@-2 {{must explicitly initialize the reference member 'z'}}
// expected-error@-3 {{must explicitly initialize the const member 'c1'}}
#endif
int& z;
#if __cplusplus <= 199711L
// expected-note@-2 {{declared here}}
#else
// expected-note@-4 {{default constructor of 'Z1' is implicitly deleted because field 'z' of reference type 'int &' would not be initialized}}
#endif
const int c1;
#if __cplusplus <= 199711L
// expected-note@-2 {{declared here}}
#endif
volatile int v1;
};
// Test default initialization which *requires* a constructor call for non-POD.
Z1 z1;
#if __cplusplus <= 199711L
// expected-note@-2 {{first required here}}
#else
// expected-error@-4 {{call to implicitly-deleted default constructor of 'Z1'}}
#endif
// Ensure that value initialization doesn't use trivial implicit constructors.
namespace PR7948 {
// Note that this is also non-POD to ensure we don't just special case PODs.
struct S { const int x; ~S(); };
const S arr[2] = { { 42 } };
}
// This is valid
union U {
const int i;
float f;
};
U u;
|