| Bug #29476 | NullException thrown when connecting to a 4.0.27 server | ||
|---|---|---|---|
| Submitted: | 2 Jul 2007 5:49 | Modified: | 6 Sep 2007 10:38 |
| Reporter: | Ellery D'Souza | Email Updates: | |
| Status: | Closed | Impact on me: | |
| Category: | Connector / NET | Severity: | S2 (Serious) |
| Version: | 5.1.2.2 | OS: | Any |
| Assigned to: | CPU Architecture: | Any | |
[16 Jul 2007 7:17]
Tonci Grgin
Hi Ellery and thanks for your report. Verified as described by reporter: - MySQL server 4.0.30pro on WinXP Pro SP2 localhost - c/NET 5.1.2 SVN (latest sources) on NET fw 2.0
[10 Aug 2007 21:31]
Bugs System
A patch for this bug has been committed. After review, it may be pushed to the relevant source trees for release in the next version. You can access the patch from: http://lists.mysql.com/commits/32403
[10 Aug 2007 21:33]
Reggie Burnett
Fixed in 5.1.3
[16 Aug 2007 14:52]
Bugs System
A patch for this bug has been committed. After review, it may be pushed to the relevant source trees for release in the next version. You can access the patch from: http://lists.mysql.com/commits/32645
[6 Sep 2007 10:38]
MC Brown
A note has been added to the 5.1.3 changelog: Connecting to a MySQL server earlier than version 4.1 would raise a NullException.
Description: Attempt to connect to a pre 4.1 server, and the following exception is thrown in MySqlField.CheckForExceptions (Field.cs): NullException - Object reference not set to an instance of an object How to repeat: Attempt to connect to a pre 4.1 server will throw the exception in MySqlField.CheckForExceptions. Suggested fix: Currently OriginalColumnName is set only by GetFieldMetaData41. Here is my modification for CheckForExceptions: Index: Field.cs =================================================================== --- Field.cs (revision 774) +++ Field.cs (working copy) @@ -234,8 +234,10 @@ private void CheckForExceptions() { - string colName = OriginalColumnName.ToLower(CultureInfo.InvariantCulture); - if (colName.StartsWith("char(")) + string colName = null; + if (OriginalColumnName != null) + colName = OriginalColumnName.ToLower(CultureInfo.InvariantCulture); + if (colName != null && colName.StartsWith("char(")) binaryOk = false; else if (connection.IsExecutingBuggyQuery) binaryOk = false;