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Merge 10.2 into 10.3

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This commit is contained in:
Marko Mäkelä
2020-08-10 18:40:57 +03:00
parent 0025eb3f96 3b6dadb5eb
commit bafc5c1321
35 changed files with 665 additions and 292 deletions
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18
strings/decimal.c
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@ -812,6 +812,24 @@ internal_str2dec(const char *from, decimal_t *to, char **end, my_bool fixed)
while (s < end_of_string && my_isdigit(&my_charset_latin1, *s))
s++;
intg= (int) (s-s1);
/*
If the integer part is long enough and it has multiple leading zeros,
let's trim them, so this expression can return 1 without overflowing:
CAST(CONCAT(REPEAT('0',90),'1') AS DECIMAL(10))
*/
if (intg > DIG_PER_DEC1 && s1[0] == '0' && s1[1] == '0')
{
/*
Keep at least one digit, to avoid an empty string.
So we trim '0000' to '0' rather than to ''.
Otherwise the below code (converting digits to to->buf)
would fail on a fatal error.
*/
const char *iend= s - 1;
for ( ; s1 < iend && *s1 == '0'; s1++)
{ }
intg= (int) (s-s1);
}
if (s < end_of_string && *s=='.')
{
endp= s+1;