gcc-4.9/gcc/testsuite/g++.old-deja/g++.other/linkage1.C


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// { dg-do assemble { target { ! c++11 } } }
typedef struct {
  int i;
} *p;

void f (p) { }			// { dg-error "with no linkage" }
p q;				// { dg-warning "with no linkage" }

int main()
{
  extern p j;			// { dg-warning "with no linkage" }
  struct A { int j; };
  extern A a;			// { dg-warning "with no linkage" }
  extern void f (A);		// { dg-error "with no linkage" }
}