ID: 42893
Updated by: [EMAIL PROTECTED]
Reported By: hoffie at gentoo dot org
-Status: Open
+Status: Feedback
Bug Type: Reproducible crash
Operating System: Linux on ia64
PHP Version: 5CVS-2007-10-08 (snap)
New Comment:
>From the looks of it, you have more problems than just PHP here. Not
only PHP breaks but also GDB. How about you try get the basic tools
working before trying PHP? :)
Previous Comments:
------------------------------------------------------------------------
[2007-10-13 10:13:40] hoffie at gentoo dot org
> Just to be sure you're not loading any php.ini files, try this:
> (gdb) run -n -r 'var_dump(defined("foo"));'
Fails with the same symptoms.
> And you could also try to see what valgrind has to say about it:
> # USE_ZEND_ALLOC=0 valgrind --leak-check=yes php -n -r
> 'var_dump(defined("foo"));'
If you gave me valgrind for ia64 I'd happily do that. ;)
> checking for a supported CPU... no (ia64)
> configure: error: Unsupported host architecture. Sorry
------------------------------------------------------------------------
[2007-10-11 13:46:28] [EMAIL PROTECTED]
Just to be sure you're not loading any php.ini files, try this:
(gdb) run -n -r 'var_dump(defined("foo"));'
And you could also try to see what valgrind has to say about it:
# USE_ZEND_ALLOC=0 valgrind --leak-check=yes php -n -r
'var_dump(defined("foo"));'
------------------------------------------------------------------------
[2007-10-08 19:24:35] hoffie at gentoo dot org
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 this bug report at http://bugs.php.net/?id=42893&edit=1
