gcc/testsuite/gcc.dg/analyzer/data-model-16.c

/* { dg-require-effective-target label_values } */

/* Labels as values.  */

#include "analyzer-decls.h"

extern void foo (void);

void *x, *y, *z;

void test (void)
{
 label0:
  foo ();
 label1:
  foo ();
 label2:
  foo ();

  x = &&label0;
  y = &&label1;
  z = &&label2;

  __analyzer_eval (x == x); /* { dg-warning "TRUE" } */
  __analyzer_eval (x == y); /* { dg-warning "FALSE" } */
}

void test_2 (int i)
{
  static void *array[] = { &&label0, &&label1, &&label2 };
  goto *array[i];

 label0:
  foo ();
 label1:
  foo ();
 label2:
  foo ();
}

void test_3 (int i)
{
  static const int array[] = { &&label0 - &&label0,
			       &&label1 - &&label0,
			       &&label2 - &&label0 };
  goto *(&&label0 + array[i]);

 label0:
  foo ();
 label1:
  foo ();
 label2:
  foo ();
}