Edit report at http://bugs.php.net/bug.php?id=43578&edit=1
ID: 43578 Updated by: the...@php.net Reported by: schulmat at cms dot hu-berlin dot de Summary: Incurred fault #6 - if returned textfield ist empty -Status: No Feedback +Status: Closed Type: Bug Package: Sybase-ct (ctlib) related Operating System: Solaris 9/10 PHP Version: 5.2.5 Assigned To: thekid Block user comment: N New Comment: This was fixed in http://svn.php.net/viewvc?view=revision&revision=300490 Previous Comments: ------------------------------------------------------------------------ [2010-01-15 22:27:38] darrick at davismedia dot org I get the following after running the test case: PHP Warning: Module 'pdo_mysql' already loaded in Unknown on line 0 bool(true) bool(true) bool(true) bool(true) >>> Query: select DC_Rights from #Resource where Resource_ID = 122 <<< Return: resource array(0) { } >>> Query: select DC_Rights from #Resource where Resource_ID = 123 <<< Return: resource array(1) { [0]=> array(1) { ["DC_Rights"]=> NULL } } >>> Query: select DC_Rights from #Resource where Resource_ID = 124 Segmentation fault: 11 (core dumped) This is on 7.0-RELEASE FreeBSD 7.0-RELEASE #0: Sun Feb 24 10:35:36 UTC 2008 r...@driscoll.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 But, I also have the same trouble on a ubuntu box. PHP 5.2.12 with Suhosin-Patch 0.9.7 (cli) (built: Jan 9 2010 14:15:45) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.2.0, Copyright (c) 1998-2009 Zend Technologies with eAccelerator v0.9.5.3, Copyright (c) 2004-2006 eAccelerator, by eAccelerator tds version = 7.0 and tds_version = 8.0 both fail Database is MSSQL Server Express Edition version 9.00.1399.06 The following patch fixes the issue but it's a hack. I compiled php5-sybase_ct with debug enabled and the seg fault occurred at line 1208. --- php_sybase_ct2.c 2010-01-15 14:03:13.000000000 -0800 +++ php_sybase_ct.c 2010-01-15 14:00:15.000000000 -0800 @@ -1205,6 +1205,7 @@ static int php_sybase_fetch_result_row ( default: { /* This indicates anything else, return it as string */ + if(result->lengths[j] < 1){result->lengths[j]=1;} ZVAL_STRINGL(&result->data[i][j], result->tmp_buffer[j], result->lengths[j]- 1, 1); break; } My guess is ct_bind is returning an indicator of -1 on some systems for text fields == '' so there is no seg fault. While on systems which seg fault the indicator from ct_bind is 0 for text fields == ''. ------------------------------------------------------------------------ [2009-05-05 01:00:01] php-bugs at lists dot php dot net No feedback was provided for this bug for over a week, so it is being suspended automatically. If you are able to provide the information that was originally requested, please do so and change the status of the bug back to "Open". ------------------------------------------------------------------------ [2009-04-27 15:57:58] j...@php.net Please try using this CVS snapshot: http://snaps.php.net/php5.2-latest.tar.gz For Windows: http://windows.php.net/snapshots/ ------------------------------------------------------------------------ [2008-11-09 10:47:01] the...@php.net I added a testcase for this bug but am currently not able to reproduce this issue. See: http://cvs.php.net/viewvc.cgi/php-src/ext/sybase_ct/tests/bug43578.phpt?revision=1.1.2.1&view=markup&pathrev=PHP_5_3 ------------------------------------------------------------------------ [2007-12-12 10:28:24] schulmat at cms dot hu-berlin dot de Description: ------------ The problem can reproduced on Solaris 9 and Solaris 10. If I compile php with ./configure \ --prefix=/usr/local/wwwbin/php-5.2.5 \ --with-apxs2=/usr/local/wwwbin/apache/bin/apxs \ (Apache 2.2.6) --with-sybase-ct=/opt/csw (freetds-version 0.64 from blastwave) and perform this simple query: select DC_Rights from Resource R where R.Resource_ID = 123; (DC_Rights type text, Resource_ID = 123 exists, should return "(empty) not NULL, works via tsql) i get "Incurred fault #6". Reproduce code: --------------- <?php require("DBConnection.cls.php"); // database connection $db=new DBConnection(); // new object $test = "set textsize 262144"; echo $test."<br />"; //$db->submitQuery($test); flush(); $query = "select DC_Rights from Resource R where R.Resource_ID = 122"; // expected Result: NULL flush(); $res_id = $db->submitQuery($query); // works! $query = "select DC_Rights from Resource R where R.Resource_ID = 123"; // expected Result: "" flush(); $res_id = $db->submitQuery($query); // doesn't work. Apache: Segmentation fault (11) echo "done!"; flush(); exit(); ?> Expected result: ---------------- set textsize 262144 select DC_Rights from Resource R where R.Resource_ID = 122 select DC_Rights from Resource R where R.Resource_ID = 123 done! Actual result: -------------- Output: Warning: sybase_connect() [function.sybase-connect]: Sybase: Server message: Changed client character set setting to 'iso_1'. (severity 10, procedure N/A) in /usr/local/htdocs/DBConnection.cls.php on line 7 Warning: sybase_connect() [function.sybase-connect]: Sybase: Server message: Changed database context to 'metadb'. (severity 10, procedure N/A) in /usr/local/htdocs/DBConnection.cls.php on line 7 Warning: sybase_select_db() [function.sybase-select-db]: Sybase: Server message: Changed database context to 'metadb'. (severity 10, procedure N/A) in /usr/local/htdocs/DBConnection.cls.php on line 10 set textsize 262144 select DC_Rights from Resource R where R.Resource_ID = 27397 select DC_Rights from Resource R where R.Resource_ID = 20676 truss output php-cli: time() = 1197455005 pollsys(0xFFBFE900, 1, 0x00000000, 0x00000000) = 1 read(4, "FD\0\0\002\0\0\0\0", 9) = 9 time() = 1197455005 time() = 1197455005 sigaction(SIGPIPE, 0xFFBFEBA0, 0xFFBFEC40) = 0 pollsys(0xFFBFEBE8, 1, 0x00000000, 0x00000000) = 1 write(4, "0F01\018\0\0\0\0 !\0\0\0".., 24) = 24 sigaction(SIGPIPE, 0xFFBFEBA0, 0xFFBFEC40) = 0 time() = 1197455005 pollsys(0xFFBFEA08, 1, 0x00000000, 0x00000000) = 1 read(4, "0401\0 r\0\0\0\0", 8) = 8 time() = 1197455005 time() = 1197455005 pollsys(0xFFBFEA08, 1, 0x00000000, 0x00000000) = 1 read(4, "E3\00F0106 m e t a d b06".., 106) = 106 time() = 1197455005 write(1, "\n W a r n i n g : s y".., 177) = 177 Warning: sybase_select_db(): Sybase: Server message: Changed database context to 'metadb'. (severity 10, procedure N/A) in /usr/local/htdocs/DBConnection.cls.php on line 10 write(1, " s e l e c t D C _ R i".., 64) = 64 time() = 1197453664 sigaction(SIGPIPE, 0xFFBFEBA0, 0xFFBFEC40) = 0 pollsys(0xFFBFEBE8, 1, 0x00000000, 0x00000000) = 1 write(4, "0F01\0 J\0\0\0\0 !\0\0\0".., 74) = 74 sigaction(SIGPIPE, 0xFFBFEBA0, 0xFFBFEC40) = 0 time() = 1197453664 pollsys(0xFFBFEA08, 1, 0x00000000, 0x00000000) = 1 read(4, "0401\0 ;\0\0\0\0", 8) = 8 time() = 1197453664 time() = 1197453664 pollsys(0xFFBFEA08, 1, 0x00000000, 0x00000000) = 1 read(4, "EE\0 !\001\t D C _ R i g".., 51) = 51 time() = 1197453664 write(1, " s e l e c t D C _ R i".., 64) = 64 time() = 1197453664 sigaction(SIGPIPE, 0xFFBFEBA0, 0xFFBFEC40) = 0 pollsys(0xFFBFEBE8, 1, 0x00000000, 0x00000000) = 1 write(4, "0F01\0 J\0\0\0\0 !\0\0\0".., 74) = 74 sigaction(SIGPIPE, 0xFFBFEBA0, 0xFFBFEC40) = 0 time() = 1197453664 pollsys(0xFFBFEA08, 1, 0x00000000, 0x00000000) = 1 read(4, "0401\0 W\0\0\0\0", 8) = 8 time() = 1197453664 time() = 1197453664 pollsys(0xFFBFEA08, 1, 0x00000000, 0x00000000) = 1 read(4, "EE\0 !\001\t D C _ R i g".., 79) = 79 time() = 1197453664 Incurred fault #6, FLTBOUNDS %pc = 0xFEC40E48 siginfo: SIGSEGV SEGV_MAPERR addr=0x004DE000 Received signal #11, SIGSEGV [default] siginfo: SIGSEGV SEGV_MAPERR addr=0x004DE000 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=43578&edit=1
