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Fix DECIMAL conversion

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The DECIMAL type was not correctly converted to positive integers. The
0x80 bit was set only for negative numbers when it needed to be XOR-ed for
all values.
This commit is contained in:
Markus Mäkelä 2017-02-13 09:30:30 +02:00
parent 16ddefc686
commit 7a35ec71da
1 changed files with 4 additions and 5 deletions
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9
server/core/mysql_binlog.c
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@ -605,12 +605,11 @@ size_t unpack_decimal_field(uint8_t *ptr, uint8_t *metadata, double *val_float)
int fbytes = fpart1 * 4 + dig_bytes[fpart2];
/** Remove the sign bit and store it locally */
bool signed_int = (ptr[0] & 0x80);
bool negative = (ptr[0] & 0x80) == 0;
ptr[0] ^= 0x80;
if (!signed_int)
if (negative)
{
ptr[0] |= 0x80;
for (int i = 0; i < ibytes; i++)
{
ptr[i] = ~ptr[i];
@ -625,7 +624,7 @@ size_t unpack_decimal_field(uint8_t *ptr, uint8_t *metadata, double *val_float)
int64_t val_i = unpack_bytes(ptr, ibytes);
int64_t val_f = fbytes ? unpack_bytes(ptr + ibytes, fbytes) : 0;
if (!signed_int)
if (negative)
{
val_i = -val_i;
val_f = -val_f;