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[Bug-glpk] Segmentation fault in table IN with if output length is zero


From: Xypron
Subject: [Bug-glpk] Segmentation fault in table IN with if output length is zero
Date: Sun, 28 Sep 2008 20:09:03 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.17) Gecko/20080829 SeaMonkey/1.1.12

Hello Andrew,

given a SQL table with a text column. When reading a text of 0 length with ODBC, SQLFetch returns output length -1. This leads to a segmentation fault in glpsql.c in statement
strncpy(buf, (const char *) sql->data[i], len);

Please, apply the following patch
http://glpk.dyndns.org/viewvc/svn/glpk/glpk/branches/glpk-4.31-segmentation_fault/src/glpsql.c?view=diff&r1=288&r2=286&diff_format=h

Best regards

Xypron





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