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Date: Tue, 28 Sep 2004 12:01:00 -0700
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Subject: Class constants ... possible?
From: junkmail@bobsilva.com ("Robert Silva")

After 3 days tracing this thing, I found the problem. Any suggestions?

Im trying to define a class constant by allocating a zval str using
ALLOC_ZVAL in PHP_MINIT for my extension. This class constant is applied to
the class and works as expected. The problem comes during shutdown. In
php_request_shutdown --> shutdown_memory_manager, it detects the ZVAL that
the constant was stored in as a "leak" and frees the zval. This causes PHP
to crash during tsrm_shutdown when it starts destroying classes.

Is it expected for a variable allocated during module init to be freed
during request shutdown?

Below is the trace of the class destruction (after the memory manager
already freed my zval in the class_constants ht.

The first line here is freeing the zval associated with the constants key in
the class_entry->constants_table (which has already been freed).

php5ts_debug.dll!_zval_internal_ptr_dtor(_zval_struct * *
php5ts_debug.dll!_zval_internal_ptr_dtor_wrapper(_zval_struct * *
php5ts_debug.dll!zend_hash_destroy(_hashtable * ht=0x009827cc)  Line 521 +
php5ts_debug.dll!destroy_zend_class(_zend_class_entry * * pce=0x009e3de4)
php5ts_debug.dll!zend_hash_destroy(_hashtable * ht=0x009e32d8)  Line 521 +
php5ts_debug.dll!compiler_globals_dtor(_zend_compiler_globals *
php5ts_debug.dll!tsrm_shutdown()  Line 164 + 0x21	C
php.exe!main(int argc=4, char * * argv=0x00902508)  Line 1056 + 0x8	C
php.exe!mainCRTStartup()  Line 398 + 0x11	C
kernel32.dll!77e814c7() 	

And here is my the call stack when it frees the memory:
e:\php5\php5cvs\php5\ext\bfl\bfl_system.c(332) :  Freeing 0x00920728 (16
bytes), script=test.php

php5ts_debug.dll!shutdown_memory_manager(int silent=0, int full_shutdown=0,
php5ts_debug.dll!php_request_shutdown(void * dummy=0x00000000)  Line 1227 +
php.exe!main(int argc=4, char * * argv=0x00902508)  Line 1046 + 0xa	C
php.exe!mainCRTStartup()  Line 398 + 0x11	C
kernel32.dll!77e814c7()


So is it possible to define a class constant during MINIT? If so how. Use a
module global?

Thanks
 Bob