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体验新版 GitCode,发现更多精彩内容 >>
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f4def44a
编写于
8月 23, 2021
作者:
B
br0
提交者:
wangzelin.wzl
8月 23, 2021
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电子邮件补丁
差异文件
Fix mysql incompatiable caused by bit size greater than 64 and data filled with zeros.
上级
ed29cc15
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
16 addition
and
4 deletion
+16
-4
src/share/object/ob_obj_cast.cpp
src/share/object/ob_obj_cast.cpp
+8
-2
src/sql/engine/expr/ob_datum_cast.cpp
src/sql/engine/expr/ob_datum_cast.cpp
+8
-2
未找到文件。
src/share/object/ob_obj_cast.cpp
浏览文件 @
f4def44a
...
...
@@ -7829,13 +7829,19 @@ int get_bit_len(const ObString& str, int32_t& bit_len)
}
else
{
const
char
*
ptr
=
str
.
ptr
();
uint32_t
uneven_value
=
reinterpret_cast
<
const
unsigned
char
&>
(
ptr
[
0
]);
int32_t
len
=
str
.
length
();
if
(
0
==
uneven_value
)
{
bit_len
=
1
;
if
(
len
>
8
)
{
// Compatible with MySQL, if the length of bit string greater than 8 Bytes,
// it would be considered too long. We set bit_len to OB_MAX_BIT_LENGTH + 1.
bit_len
=
OB_MAX_BIT_LENGTH
+
1
;
}
else
{
bit_len
=
1
;
}
}
else
{
// Built-in Function: int __builtin_clz (unsigned int x).
// Returns the number of leading 0-bits in x, starting at the most significant bit position.
// If x is 0, the result is undefined.
int32_t
len
=
str
.
length
();
int32_t
uneven_len
=
static_cast
<
int32_t
>
(
sizeof
(
unsigned
int
)
*
8
-
__builtin_clz
(
uneven_value
));
bit_len
=
uneven_len
+
8
*
(
len
-
1
);
}
...
...
src/sql/engine/expr/ob_datum_cast.cpp
浏览文件 @
f4def44a
...
...
@@ -916,13 +916,19 @@ static OB_INLINE int common_get_bit_len(const ObString& str, int32_t& bit_len)
}
else
{
const
char
*
ptr
=
str
.
ptr
();
uint32_t
uneven_value
=
reinterpret_cast
<
const
unsigned
char
&>
(
ptr
[
0
]);
int32_t
len
=
str
.
length
();
if
(
0
==
uneven_value
)
{
bit_len
=
1
;
if
(
len
>
8
)
{
// Compatible with MySQL, if the length of bit string greater than 8 Bytes,
// it would be considered too long. We set bit_len to OB_MAX_BIT_LENGTH + 1.
bit_len
=
OB_MAX_BIT_LENGTH
+
1
;
}
else
{
bit_len
=
1
;
}
}
else
{
// Built-in Function: int __builtin_clz (unsigned int x).
// Returns the number of leading 0-bits in x, starting at the most significant bit position.
// If x is 0, the result is undefined.
int32_t
len
=
str
.
length
();
int32_t
uneven_len
=
static_cast
<
int32_t
>
(
sizeof
(
unsigned
int
)
*
8
-
__builtin_clz
(
uneven_value
));
bit_len
=
uneven_len
+
8
*
(
len
-
1
);
}
...
...
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