#29944 [Asn]: Function defined in switch, crashes

ID: 29944 Updated by: derick@php.net Reported By: norxh at binnews dot com Status: Assigned Bug Type: Reproducible crash Operating System: Windows XP SP2 PHP Version: 5.0.1 Assigned To: andi New Comment: This is only a problem in PHP 5.0.x (and not PHP 5.1.x-dev). Previous Comments: ------------------------------------------------------------------------ [2004-09-02 08:32:23] derick@php.net Although I see no point in doing this at all (it should not necessarily work), it shouldn't crash either. valgrind: ==2720== Conditional jump or move depends on uninitialised value(s) ==2720== at 0x83062CB: zend_switch_free (zend_execute.c:200) ==2720== by 0x8302A8D: zend_switch_free_handler (zend_execute.c:3222) ==2720== by 0x82FDC88: execute (zend_execute.c:1391) ==2720== by 0x830140F: zend_do_fcall_common_helper (zend_execute.c:2728) ==2720== by 0x8301890: zend_do_fcall_by_name_handler (zend_execute.c:2810) ==2720== ==2720== Use of uninitialised value of size 4 ==2720== at 0x8305E29: zend_pzval_unlock_func (zend_execute.c:65) ==2720== by 0x83062E6: zend_switch_free (zend_execute.c:205) ==2720== by 0x8302A8D: zend_switch_free_handler (zend_execute.c:3222) ==2720== by 0x82FDC88: execute (zend_execute.c:1391) ==2720== by 0x830140F: zend_do_fcall_common_helper (zend_execute.c:2728) ==2720== ==2720== Invalid read of size 4 ==2720== at 0x8305E29: zend_pzval_unlock_func (zend_execute.c:65) ==2720== by 0x83062E6: zend_switch_free (zend_execute.c:205) ==2720== by 0x8302A8D: zend_switch_free_handler (zend_execute.c:3222) ==2720== by 0x82FDC88: execute (zend_execute.c:1391) ==2720== by 0x830140F: zend_do_fcall_common_helper (zend_execute.c:2728) ==2720== Address 0x8 is not stack'd, malloc'd or (recently) free'd ==2720== ==2720== Process terminating with default action of signal 11 (SIGSEGV) ==2720== Access not within mapped region at address 0x8 ==2720== at 0x8305E29: zend_pzval_unlock_func (zend_execute.c:65) ==2720== by 0x83062E6: zend_switch_free (zend_execute.c:205) ==2720== by 0x8302A8D: zend_switch_free_handler (zend_execute.c:3222) ==2720== by 0x82FDC88: execute (zend_execute.c:1391) ==2720== by 0x830140F: zend_do_fcall_common_helper (zend_execute.c:2728) ==2720== GDB: 0x08305e29 in zend_pzval_unlock_func (z=0x0) at /dat/dev/php/php-5.0dev/Zend/zend_execute.c:65 65 z->refcount--; (gdb) bt #0 0x08305e29 in zend_pzval_unlock_func (z=0x0) at /dat/dev/php/php-5.0dev/Zend/zend_execute.c:65 #1 0x083062e7 in zend_switch_free (opline=0x85bd95c, Ts=0x85bdfbc) at /dat/dev/php/php-5.0dev/Zend/zend_execute.c:205 #2 0x08302a8e in zend_switch_free_handler (execute_data=0xbfffd400, opline=0x85bd95c, op_array=0x85bded8) at /dat/dev/php/php-5.0dev/Zend/zend_execute.c:3222 #3 0x082fdc89 in execute (op_array=0x85bded8) at /dat/dev/php/php-5.0dev/Zend/zend_execute.c:1391 #4 0x08301410 in zend_do_fcall_common_helper (execute_data=0xbfffd4f0, opline=0x85bc4cc, op_array=0x85b7f5c) at /dat/dev/php/php-5.0dev/Zend/zend_execute.c:2728 #5 0x08301891 in zend_do_fcall_by_name_handler (execute_data=0xbfffd4f0, opline=0x85bc4cc, op_array=0x85b7f5c) at /dat/dev/php/php-5.0dev/Zend/zend_execute.c:2810 #6 0x082fdc89 in execute (op_array=0x85b7f5c) at /dat/dev/php/php-5.0dev/Zend/zend_execute.c:1391 #7 0x082da17f in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /dat/dev/php/php-5.0dev/Zend/zend.c:1061 #8 0x08293dc7 in php_execute_script (primary_file=0xbffff930) at /dat/dev/php/php-5.0dev/main/main.c:1629 #9 0x0830a856 in main (argc=1, argv=0xbffffa04) at /dat/dev/php/php-5.0dev/sapi/cli/php_cli.c:943 Assinging to Andi. ------------------------------------------------------------------------ [2004-09-02 04:48:20] norxh at binnews dot com Description: ------------ Crashes when run in cli or apache2 with no external modules. Reproduce code: --------------- <?PHP $a = 1; $b = "1"; switch ($a) { case 1: function foo($bar) { if (preg_match('/\d/', $bar)) return true; return false; } echo foo($b); } ?> Expected result: ---------------- 1 Actual result: -------------- crash ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=29944&edit=1