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bug #8663 cant use bigint unsigned as input to cast

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in the case of the overflow in the decimal->integer conversion
we didn't return the proper boundary value, but just the result
of the conversion we calculated on the moment of the error


mysql-test/r/bigint.result:
  bug #8663 cant use bigint unsigned as input to cast
  test result fixed
mysql-test/t/bigint.test:
  bug #8663 cant use bigint unsigned as input to cast
  test case
strings/decimal.c:
  bug #8663 cant use bigint unsigned as input to cast
  decimal->int conversion fixed to return proper boundary value
  in the case of overflow
This commit is contained in:
unknown
2007-05-16 10:12:49 +05:00
parent d886ea8fb6
commit 1e33cfb36a
3 changed files with 21 additions and 1 deletions
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6
strings/decimal.c
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@ -1083,7 +1083,11 @@ int decimal2longlong(decimal_t *from, longlong *to)
x=x*DIG_BASE - *buf++;
if (unlikely(y < (LONGLONG_MIN/DIG_BASE) || x > y))
{
*to= from->sign ? y : -y;
/*
the decimal is bigger than any possible integer
return border integer depending on the sign
*/
*to= from->sign ? LONGLONG_MIN : LONGLONG_MAX;
return E_DEC_OVERFLOW;
}
}