gcc/testsuite/gcc.target/bpf/diag-indcalls.c

/* Verify proper errors are generated for indirect function calls.  */
/* { dg-do compile } */
/* { dg-options "-O0" } */

void (*fnp) (void);

void
foo ()
{
  (*fnp) ();
} /* { dg-error "indirect call in function" } */