#36113 [Opn->Fbk]: Reading records causes malloc(): memory corruption:

ID: 36113 Updated by: tony2001@php.net Reported By: kermodebear at kermodebear dot org -Status: Open +Status: Feedback Bug Type: dBase related Operating System: RedHat Linux PHP Version: 5.1.2 New Comment: Please try this patch: http://tony2001.phpclub.net/dev/tmp/bug36113.diff The field type you're using (TIMESTAMP) is not supported by the library PHP uses to work with DBF files, so you should get a nice error message in this case. I don't use DBase, so please test this patch with supported fields, just to make sure it doesn't break anything. Thanks. Previous Comments: ------------------------------------------------------------------------ [2006-01-20 23:55:33] kermodebear at kermodebear dot org Description: ------------ Reading records from a specific dBase file causes the following error message: *** glibc detected *** malloc(): memory corruption: 0x09efb7d0 *** Aborted However, if dbase_get_header_info() is called before the reading of records, then a different error occurs: *** glibc detected *** free(): invalid next size (fast): 0x08c4b270 *** Aborted You can download the file causing the issue: www.kermodebear.org/php_bug_data/sample.DBF I thought that the file may be corrupted, so I downloaded three different software packages ('DBF View', 'DBF Viewer 2000', 'DBF Manager') and each of them was able to view the data without a problem. I'm fairly certain that the file itself is not corrupt. Even if it is, PHP should not cause these kinds of errors; The dbase_get_record function should return false on error. PHP version is 5.1.2; ./configure --enable-dbase Reproduce code: --------------- <?php $h = dbase_open( 'sample.DBF', 0 ); // Uncomment the line below for a different error. // dbase_get_header_info( $h ); for( $i = 1; $i <= dbase_numrecords( $h ); $i++ ) { dbase_get_record( $h, $i ); } ?> Expected result: ---------------- No output at all; The file should be opened, all records should be read, and the script should end. Actual result: -------------- [jmiller@DEVEL cli]$ ./php test.php *** glibc detected *** malloc(): memory corruption: 0x09efb7d0 *** Aborted With dbase_get_header_info() called before fetching records: [jmiller@DEVEL cli]$ ./php test.php *** glibc detected *** free(): invalid next size (fast): 0x091f60b8 *** Aborted ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=36113&edit=1