bug #8663 cant use bigint unsigned as input to cast

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
parent 11d5f7ee
No related merge requests found
......@@ -352,3 +352,13 @@ select c1 mod 50 as result from t1;
result
6
drop table t1;
select cast(19999999999999999999 as signed);
cast(19999999999999999999 as signed)
9223372036854775807
Warnings:
Error 1292 Truncated incorrect DECIMAL value: ''
select cast(-19999999999999999999 as signed);
cast(-19999999999999999999 as signed)
-9223372036854775808
Warnings:
Error 1292 Truncated incorrect DECIMAL value: ''
......@@ -288,3 +288,9 @@ insert into t1 values (10000002383263201056);
select c1 mod 50 as result from t1;
drop table t1;
#
# Bug #8663 cant use bgint unsigned as input to cast
#
select cast(19999999999999999999 as signed);
select cast(-19999999999999999999 as signed);
......@@ -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;
}
}
......
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