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// { dg-do run }
// Copyright (C) 1999 Free Software Foundation, Inc.
// Contributed by Nathan Sidwell 20 May 1999 <nathan@acm.org>
// Although anon unions cannot have user defined member functions
// [class.union/2]. They should have implicitly defined copy ctors and
// and the like [class.copy/4]. Make sure we generate one of the correct
// signature and that it works ok.
extern "C" void abort();
struct A
{
union
{
int a;
};
};
union B
{
int a;
};
static A Ctor(A const &src)
{
A result(src); // this should not cause a const violation
result = src; // and neither should this
return result;
}
typedef __SIZE_TYPE__ size_t;
void *operator new(size_t, void *ptr)
{
return ptr;
}
// check copy ctor and assignment for plain union
void check_union()
{
B b1;
B b2;
b1.a = 5;
b2.a = 6;
b2 = b1;
if(b2.a != 5)
abort();
b2.a = 6;
new (&b2) B(b1);
if(b2.a != 5)
abort();
return;
}
// check copy ctor and assignment for class containing anon-union
void check_union_member()
{
A a1;
A a2;
a1.a = 5;
a2.a = 6;
a2 = a1;
if(a2.a != 5)
abort();
a2.a = 6;
new (&a2) A(a1);
if(a2.a != 5)
abort();
return;
}
int main()
{
check_union();
check_union_member();
return 0;
}
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