QUERY WITH DATA ?AST

Description:
============
MySQL server ends abruptly when an Insert query is executed
with specific value "1e-2147483648".

ANALYSIS:
=========
Server ends abruptly when my_strntoull10_8bit is invoked to
convert user provided string "1e-2147483648" to signed or
unsigned long long integer value. In order to calculate the
place of decimal it uses an "if" condition containing
variable shift of int datatype and tries to negate it. But
as value "-2147483648"(INT32_MIN) is minimum supported int
value. so expression "-shift" will result into
"-2147483648" as maximum int value supported is
"2147483647"(INT32_MAX).

SOLUTION:
=========
c++ function abs() is also useless to get the absolute
value of this particular value so better to fix it by
modifing the IF condition
    (-shift >= DIGITS_IN_ULONGLONG)
    to
    (shift == INT_MIN32 || -shift >= DIGITS_IN_ULONGLONG)

Change-Id: I155ed2020f71b2b35fb4aa84ed3b3eb15883274b