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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gnat.dg/] [overflow_sum.adb] - Blame information for rev 304

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1 304 jeremybenn 
--  { dg-do run }
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--  { dg-options "-gnato" }
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procedure Overflow_Sum is
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   function sum (a, b, c, d, e, f, g, h, i, j, k, l, m,
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                 n, o, p, q, r, s, t, u, v, w, x, y, z : Integer)
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                 return Integer
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   is
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   begin
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      return a + b + c + d + e + f + g + h + i + j + k + l + m
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           + n + o + p + q + r + s + t + u + v + w + x + y + z;
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   end;
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   f : integer;
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begin
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   f := sum (a => -2**31, b =>      1, c =>  2**31 - 1,  -- 0
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             d =>      1, e => -2**31, f =>  2**31 - 1,  -- 0
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             g =>   2**0, h =>      2, i =>          4,  -- 2**3 - 1
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             j =>   2**3, k =>   2**4, l =>       2**5,  -- 2**6 - 1
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             m =>   2**6, n =>   2**7, o =>       2**8,  -- 2**9 - 1
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             p =>   2**9, q =>  2**10, r =>      2**11,  -- 2**12 - 1
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             s =>  2**12, t =>  2**13, u =>      2**14,  -- 2**15 - 1
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             v =>  2**15, w =>  2**16, x =>      2**17,  -- 2**18 - 1
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             y =>  2**31 - 2**18,      z =>          0); -- 2**31 - 1
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   if f /= 2**31 - 1 then
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      raise Program_Error;
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   end if;
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   begin
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      f := sum (a =>      f, b => -2**31, c =>          1,  -- 0
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                d => -2**31, e =>      1, f =>          f,  -- 0
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                g =>   2**0, h =>      2, i =>          4,  -- 2**3 - 1
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                j =>   2**3, k =>   2**4, l =>       2**5,  -- 2**6 - 1
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                m =>   2**6, n =>   2**7, o =>       2**8,  -- 2**9 - 1
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                p =>   2**9, q =>  2**10, r =>      2**11,  -- 2**12 - 1
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                s =>  2**12, t =>  2**13, u =>      2**14,  -- 2**15 - 1
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                v =>  2**15, w =>  2**16, x =>      2**17,  -- 2**18 - 1
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                y =>  2**31 - 2**18,      z =>          1); -- 2**31 (overflow)
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      raise Program_Error;
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   exception
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      when Constraint_Error => null;
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   end;
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end;

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