120 lines
2.8 KiB
C++
120 lines
2.8 KiB
C++
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// RUN: %clang_cc1 -fsyntax-only -verify %s
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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
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struct X1 { // has no implicit default constructor
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X1(int);
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};
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struct X2 : X1 {
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#if __cplusplus <= 199711L
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// expected-note@-2 2 {{'X2' declared here}}
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#endif
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X2(int);
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};
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struct X3 : public X2 {
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#if __cplusplus <= 199711L
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// expected-error@-2 {{implicit default constructor for 'X3' must explicitly initialize the base class 'X2' which does not have a default constructor}}
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#else
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// expected-note@-4 {{default constructor of 'X3' is implicitly deleted because base class 'X2' has no default constructor}}
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#endif
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};
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X3 x3;
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#if __cplusplus <= 199711L
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// expected-note@-2 {{first required here}}
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#else
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// expected-error@-4 {{call to implicitly-deleted default constructor of 'X3'}}
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#endif
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struct X4 {
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#if __cplusplus <= 199711L
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// expected-error@-2 {{must explicitly initialize the member 'x2'}}
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// expected-error@-3 {{must explicitly initialize the reference member 'rx2'}}
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#endif
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X2 x2;
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#if __cplusplus <= 199711L
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// expected-note@-2 {{member is declared here}}
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#else
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// expected-note@-4 {{default constructor of 'X4' is implicitly deleted because field 'x2' has no default constructor}}
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#endif
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X2 & rx2;
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#if __cplusplus <= 199711L
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// expected-note@-2 {{declared here}}
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#endif
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};
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X4 x4;
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#if __cplusplus <= 199711L
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// expected-note@-2 {{first required here}}
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#else
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// expected-error@-4 {{call to implicitly-deleted default constructor of 'X4'}}
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#endif
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struct Y1 { // has no implicit default constructor
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Y1(int);
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};
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struct Y2 : Y1 {
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Y2(int);
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Y2();
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};
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struct Y3 : public Y2 {
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};
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Y3 y3;
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struct Y4 {
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Y2 y2;
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};
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Y4 y4;
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// More tests
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struct Z1 {
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#if __cplusplus <= 199711L
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// expected-error@-2 {{must explicitly initialize the reference member 'z'}}
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// expected-error@-3 {{must explicitly initialize the const member 'c1'}}
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#endif
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int& z;
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#if __cplusplus <= 199711L
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// expected-note@-2 {{declared here}}
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#else
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// expected-note@-4 {{default constructor of 'Z1' is implicitly deleted because field 'z' of reference type 'int &' would not be initialized}}
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#endif
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const int c1;
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#if __cplusplus <= 199711L
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// expected-note@-2 {{declared here}}
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#endif
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volatile int v1;
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};
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// Test default initialization which *requires* a constructor call for non-POD.
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Z1 z1;
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#if __cplusplus <= 199711L
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// expected-note@-2 {{first required here}}
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#else
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// expected-error@-4 {{call to implicitly-deleted default constructor of 'Z1'}}
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#endif
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// Ensure that value initialization doesn't use trivial implicit constructors.
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namespace PR7948 {
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// Note that this is also non-POD to ensure we don't just special case PODs.
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struct S { const int x; ~S(); };
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const S arr[2] = { { 42 } };
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}
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// This is valid
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union U {
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const int i;
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float f;
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};
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U u;
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