incomplete1.c

来自「this is a gcc file, you can download it 」· C语言 代码 · 共 22 行

// { dg-do compile }

// Contributed by Brian Gaeke; public domain.

// 5 If the object being deleted has incomplete class type at the
// point of deletion and the complete class has a non-trivial
// destructor or a deallocation function, the behavior is undefined.

// (But the deletion does not constitute an ill-formed program. So the
// program should nevertheless compile, but it should give a warning.)

class A;	// { dg-warning "forward declaration of `struct A'" "" }

A *a;		// { dg-warning "`a' has incomplete type" "" }

int
main (int argc, char **argv)
{
  delete a;	// { dg-warning "delete" "" { xfail *-*-* } }
  return 0;
}