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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.dg/] [setjmp-1.c] - Blame information for rev 816

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Line No. Rev Author Line
1 149 jeremybenn
/* Test for bogus "variable `x' may be clobbered by longjmp" warnings.
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   Inspired by cse.c:simplify_relational_operation. */
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/* { dg-do compile } */
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/* { dg-options "-O -W -Wall" } */
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#include <setjmp.h>
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extern void set_float_handler (jmp_buf *);
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#define EQ 0x01
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#define LT 0x02
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#define GT 0x04
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int
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compare_float (double a, double b)  /* { dg-bogus "clobbered" "spurious clobbered warning" } */
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{
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  jmp_buf handler;
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  int result;
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  a += 1.0;
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  if (setjmp (handler))
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    {
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      set_float_handler (0);
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      return 0;
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    }
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  set_float_handler (&handler);
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  if (a == b) result = EQ;
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  else if (a > b) result = LT;
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  else if (a < b) result = GT;
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  else result = 0;
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  set_float_handler (0);
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  return result;
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}

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