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/* Test for bogus "variable `x' may be clobbered by longjmp" warnings.

   Inspired by cse.c:simplify_relational_operation. */

/* { dg-do compile } */

/* { dg-options "-O -Wclobbered -Wextra -Wall" } */

#include <setjmp.h>

extern void set_float_handler (jmp_buf *);

#define EQ 0x01

#define LT 0x02

#define GT 0x04

int

compare_float (double a, double b)  /* { dg-bogus "clobbered" "spurious clobbered warning" } */

{

  jmp_buf handler;

  int result;

  a += 1.0;

  if (setjmp (handler))

    {

      set_float_handler (0);

      return 0;

    }

  set_float_handler (&handler);

  if (a == b) result = EQ;

  else if (a > b) result = LT;

  else if (a < b) result = GT;

  else result = 0;

  set_float_handler (0);

  return result;

}