test/SemaCXX/default-constructor-initializers.cpp

   1 // RUN: clang-cc -fsyntax-only -verify %s
   2
   3 struct X1 { // has no implicit default constructor
   4    X1(int);
   5 };
   6
   7 struct X2  : X1 {  // expected-note {{'struct X2' declared here}} \
   8                   //  expected-note {{'struct X2' declared here}}
   9    X2(int);
  10 };
  11
  12 struct X3 : public X2 {
  13 };
  14 X3 x3;  // expected-error {{cannot define the implicit default constructor for 'struct X3', because member 'struct X2' does not have any default constructor}}
  15
  16
  17 struct X4 {
  18   X2 x2;
  19   X2 & rx2; // expected-note {{declared at}}
  20 };
  21
  22 X4 x4; // expected-error {{cannot define the implicit default constructor for 'struct X4', because base class 'struct X2' does not have any default constructor}} \
  23        // expected-error {{cannot define the implicit default constructor for 'struct X4', because reference member 'rx2' cannot be default-initialized}}
  24
  25
  26 struct Y1 { // has no implicit default constructor
  27    Y1(int);
  28 };
  29
  30 struct Y2  : Y1 {
  31    Y2(int);
  32    Y2();
  33 };
  34
  35 struct Y3 : public Y2 {
  36 };
  37 Y3 y3;
  38
  39 struct Y4 {
  40   Y2 y2;
  41 };
  42
  43 Y4 y4;
  44
  45 // More tests
  46
  47
  48 struct Z1 {
  49         int& z; // expected-note {{declared at}}
  50         const int c1; // expected-note {{declared at}}
  51         volatile int v1;
  52 };
  53
  54 Z1 z1;  // expected-error {{cannot define the implicit default constructor for 'struct Z1', because reference member 'z' cannot be default-initialized}} \
  55         // expected-error {{cannot define the implicit default constructor for 'struct Z1', because const member 'c1' cannot be default-initialized}}
  56