1 // { dg-do run } 2 // Copyright (C) 2000, 2001 Free Software Foundation, Inc. 3 // Contributed by Nathan Sidwell 28 Nov 2000 <nathan@codesourcery.com> 4 5 // Related to bug 91. We'd not preserve constness accessing a member of the 6 // source type in copy ctor and assignment op. 7 8 #include <stdio.h> 9 10 int value = 0; 11 12 struct A 13 { AA14 A() {} 15 AA16 A( A& arg) 17 { printf ("%s\n", __PRETTY_FUNCTION__); value = 1;} 18 AA19 A( const A& arg) 20 { printf ("%s\n", __PRETTY_FUNCTION__); value = 2;} 21 22 A& operator=( A& ) 23 { printf ("%s\n", __PRETTY_FUNCTION__); value = 3; return *this; } 24 25 A& operator=( const A& ) 26 { printf ("%s\n", __PRETTY_FUNCTION__); value = 4; return *this; } 27 }; 28 29 struct B 30 { 31 A a; BB32 B () {} 33 }; 34 foo(A &)35void foo( A& ) 36 { 37 printf ("%s\n", __PRETTY_FUNCTION__); value = 5; 38 } 39 foo(const A &)40void foo( const A& ) 41 { 42 printf ("%s\n", __PRETTY_FUNCTION__); value = 6; 43 } 44 main()45int main() 46 { 47 const A a0; 48 value = 0; printf ("A(cA) : "); A a1(a0); if (value != 2) return 1; 49 value = 0; printf ("A(A ) : "); A a2(a1); if (value != 1) return 2; 50 51 const B b0; 52 value = 0; printf ("B(cB) : "); B b1(b0); if (value != 2) return 3; 53 value = 0; printf ("B(B ) : "); B b2(b1); if (value != 2) return 4; 54 55 value = 0; printf ("A= cA : "); a1 = a0; if (value != 4) return 5; 56 value = 0; printf ("A= A : "); a1 = a2; if (value != 3) return 6; 57 value = 0; printf ("B= cB : "); b1 = b0; if (value != 4) return 7; 58 value = 0; printf ("B= B : "); b1 = b2; if (value != 4) return 8; 59 60 value = 0; printf ("foo(cB): "); foo(b0.a); if (value != 6) return 9; 61 value = 0; printf ("foo(B ): "); foo(b2.a); if (value != 5) return 10; 62 63 return 0; 64 } 65