[freetds] [ freetds-Patches-753288 ] Fix: int cast-and-deref in ODBC error.c.
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Thu Jun 12 10:02:40 EDT 2003
Patches item #753288, was opened at 2003-06-12 15:50
Message generated for change (Comment added) made by freddy77
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Category: odbc
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Gerhard Esterhuizen (gmpff)
Assigned to: Nobody/Anonymous (nobody)
Summary: Fix: int cast-and-deref in ODBC error.c.
Initial Comment:
In the nightly sources from 12/06/2003,
/src/odbc/error.c, line 404 we have:
*(SQLINTEGER *) buffer = *(SQLINTEGER *)
tsock->res_info->row_count;
This is a bug as tsock->res_info->row_count is a
TDS_INT containing the number of result rows and should
therefore not be cast to a pointer and dereferenced.
This causes segfaults when executing queries (using
SQLExecute) that returned no results (resulting in a
NULL pointer being dereferenced).
I fixed this by changing the line to:
*(SQLINTEGER *) buffer = tsock->res_info->row_count;
A patch against nightly source 12062003 is attached.
Regards,
gerhard.
----------------------------------------------------------------------
>Comment By: Frediano Ziglio (freddy77)
Date: 2003-06-12 16:02
Message:
Logged In: YES
user_id=75766
Applyed
----------------------------------------------------------------------
Comment By: Gerhard Esterhuizen (gmpff)
Date: 2003-06-12 15:55
Message:
Logged In: YES
user_id=698709
I forgot to check the file attach box. Please forgive me for
being an idiot. Here it is attached now.
g.
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