#42893 [NEW]: php segfaults on ia64 when working w/ constants

From: hoffie at gentoo dot org Operating system: Linux on ia64 PHP version: 5CVS-2007-10-08 (snap) PHP Bug Type: Reproducible crash Bug description: php segfaults on ia64 when working w/ constants Description: ------------ >=php-5.2.0 seems to be totally broken on the ia64 architecture: Even when compiling with very minimal features PHP simply segfaults when doing basic operations involving constants, e.g. using define() or defined(). As soon as debugging symbols are enabled (CFLAGS=-g or ./configure --enable-debug) the problem disappears, that's why I'm unable to provide a useful backtrace. As the problem first appeared in 5.2.0 it might be related to the memory manager changes? The patch mentioned in bug 42317 makes this problem disappear as well, but as one of you already noted in the other bug it's probably not a real solution. Reproduce code: --------------- i2 php5.2-200710081630 # ./configure --disable-all --disable-cgi --enable-cli && make [...] i2 php5.2-200710081630 # ./sapi/cli/php -r 'var_dump(defined("foo"));' Versions of related libs/tools: automake-1.10, autoconf-2.13, libtool-1.5.24, bison-2.3, flex-2.5.4, gcc-4.1.2, glibc-2.5, binutils-2.17 This is on a fresh Gentoo system, but when compiling on Debian Etch the same problems appear, so I don't think it's related to distribution-specific patches to toolchain parts like binutils/gcc. Expected result: ---------------- bool(false) Actual result: -------------- Segmentation fault (gdb) run -r 'var_dump(defined("foo"));' Starting program: /tmp/php5.2-200710081630/sapi/cli/php -r 'var_dump(defined("foo"));' Program received signal SIGSEGV, Segmentation fault. _zval_ptr_dtor (zval_ptr=0x60000fffff91ebd0) at /tmp/php5.2-200710081630/Zend/zend_execute_API.c:412 412 (*zval_ptr)->refcount--; (gdb) bt #0 _zval_ptr_dtor (zval_ptr=0x60000fffff91ebd0) at /tmp/php5.2-200710081630/Zend/zend_execute_API.c:412 #1 0x4000000000298860 in zend_do_fcall_common_helper_SPEC (execute_data=0x60000fffff91ec50) at /tmp/php5.2-200710081630/Zend/zend_execute.h:155 ia64-tdep.c:1591: internal-error: ia64_frame_prev_register: Assertion `regnum >= 0' failed. A problem internal to GDB has been detected, further debugging may prove unreliable. -- Edit bug report at http://bugs.php.net/?id=42893&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=42893&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=42893&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=42893&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=42893&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=42893&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=42893&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=42893&r=needscript Try newer version: http://bugs.php.net/fix.php?id=42893&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=42893&r=support Expected behavior: http://bugs.php.net/fix.php?id=42893&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=42893&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=42893&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=42893&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=42893&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=42893&r=dst IIS Stability: http://bugs.php.net/fix.php?id=42893&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=42893&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=42893&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=42893&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=42893&r=mysqlcfg