gcc/testsuite/g++.old-deja/g++.rfg/00321_01-.C

// Here is a simple one.  GCC correctly gives errors for this code when the
// - -pedantic-errors option is used, whereas g++ doesn't.

// Build don't link:

int (*p1)[3];
int (*p2)[5];

void
test ()
{
  p1 == p2;		// ERROR - comparison.*
  p1 > p2;		// ERROR - comparison.*
}