Bug #58765 Warning in item.h on Windows

• Submitted: 6 Dec 2010 21:22
• Modified: 10 Jan 2011 15:37
• Reporter: Calvin Sun
• Status: Closed
• Category: MySQL Server: Compiling
• Severity: S3 (Non-critical)
• Version: 5.5+
• OS: Windows
• Assigned to: Davi Arnaut
• CPU Architecture: Any

[6 Dec 2010 21:22] Calvin Sun

Description:
In 5.5+, there are many compiler warnings on Windows because of the following:

d:\work\mysql-5.5-innodb\sql\item.h(1234) : warning C4244: '=' : conversion from 'ulonglong' to 'uint32', possible loss of data

The above is from 32-bit Windows, using MSVC 2008.

How to repeat:
Compile the server on Windows.

[17 Dec 2010 20:13] 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/127226

3212 Davi Arnaut	2010-12-17
      Bug#58765: Warning in item.h on Windows
      
      Truncate the maximum result length (64-bit wide type) to fit into
      the item maximum length (32-bit wide type). This is possible as
      this specific branch is only used if the maximum result length
      is less than 0x1000000 (MAX_BLOB_WIDTH), which fits comfortably
      in a 32-bit wide type.

[7 Jan 2011 21:14] Bugs System

Pushed into mysql-trunk 5.6.2 (revid:[e-mail]-20110107195411-btoz25nczquv47wj) (version source revid:[e-mail]-20110107195411-btoz25nczquv47wj) (merge vers: 5.6.2) (pib:24)

[7 Jan 2011 21:14] Bugs System

Pushed into mysql-5.5 5.5.9 (revid:[e-mail]-20110107193241-hg6qmwb5emsn4l8v) (version source revid:[e-mail]-20110107193241-hg6qmwb5emsn4l8v) (merge vers: 5.5.9) (pib:24)

[10 Jan 2011 15:37] Paul DuBois

No/minimal user impact. No changelog entry needed.