Details
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Bug
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Status: Stalled (View Workflow)
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Major
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Resolution: Unresolved
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10.2, 10.3, 10.4, 10.5, 10.6, 10.7
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None
Description
Since CRC32(par, expr) and CRC32C(par, expr) presume the par part to be an already calculated CRC32 value, it has to be a 32-bit unsigned integer. However, they don't check it to be in the range, they just either truncate or roll over all other numeric values silently, without warnings or errors:
|
preview-10.8-MDEV-27265-misc 3d04e67d |
MariaDB [(none)]> select crc32(4294967296,''); |
+----------------------+ |
| crc32(4294967296,'') | |
+----------------------+ |
| 0 |
|
+----------------------+ |
1 row in set (0.001 sec) |
MariaDB [(none)]> select crc32(1e100,''); |
+-----------------+ |
| crc32(1e100,'') | |
+-----------------+ |
| 4294967295 |
|
+-----------------+ |
1 row in set (0.001 sec) |
MariaDB [(none)]> select crc32(10.11,''); |
+-----------------+ |
| crc32(10.11,'') | |
+-----------------+ |
| 10 |
|
+-----------------+ |
1 row in set (0.001 sec) |
MariaDB [(none)]> select crc32(-1,''); |
+--------------+ |
| crc32(-1,'') | |
+--------------+ |
| 4294967295 |
|
+--------------+ |
1 row in set (0.001 sec) |
It does however validate it to be numeric, so the behavior is at least inconsistent.
MariaDB [(none)]> select crc32('',''); |
+--------------+ |
| crc32('','') | |
+--------------+ |
| 0 |
|
+--------------+ |
1 row in set, 1 warning (0.001 sec) |
 |
MariaDB [(none)]> show warnings;
|
+---------+------+---------------------------------------+ |
| Level | Code | Message | |
+---------+------+---------------------------------------+ |
| Warning | 1292 | Truncated incorrect INTEGER value: '' | |
+---------+------+---------------------------------------+ |
1 row in set (0.000 sec) |
Attachments
Issue Links
- relates to
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MDEV-27208 Implement 2-ary CRC32() and the CRC32C() function
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- Closed
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- Confirmed
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