Re-Fixed bug #60536 (Traits Segfault)
#Thanks to tony2001, I found the previous fix -r321089 is actually not a correct one.
#The key problem there is because the traits didn't correct set the property_info.offset
#for private properties. so here come the new fix.
# this is a tough one, I think I should explain
# Zend use zend_object->properties_table both as zval ** and zval ***
# if a zend_object->properties is not initialized, the properties_table is zval **
# while in rebuild_object_properties, zend will store the zval ** to zend_object->properties
# then stash the zval ***(ie, zobj->properties_table[0] is zval ** now) to zobj->properties_table[0]
# so when a zend_object inherit form multi parent and these parent have a same property_info->offset
# properties, will result in a repeat zval **->zval ** transform, which will lead to a segmentfault
# *may be* this fix is not the best fix, we should not use this tricky way, and rewrite this mechanism.
. zend_function.pass_rest_by_reference is replaced by
ZEND_ACC_PASS_REST_BY_REFERENCE in zend_function.fn_flags
. zend_function.return_reference is replaced by ZEND_ACC_RETURN_REFERENCE
in zend_function.fn_flags
. zend_arg_info.required_num_args removed. it was needed only for internal
functions. Now the first arg_info for internal function (which has special
meaning) is represented by zend_internal_function_info structure.
. zend_op_array.size, size_var, size_literal, current_brk_cont,
backpatch_count moved into CG(context), because they are used only during
compilation.
. zend_op_array.start_op is moved into EG(start_op), because it's used
only for 'interactive' execution of single top-level op-array.
. zend_op_array.done_pass_two is replaced by ZEND_ACC_DONE_PASS_TWO in
zend_op_array.fn_flags.
. op_array.vars array is trimmed (reallocated) during pass_two.
. zend_class_entry.constants_updated is replaced by
ZEND_ACC_CONSTANTS_UPDATED in zend_class_entry.ce_flags
. the size of zend_class_entry is reduced by sharing the same memory space
by different information for internal and user classes.
See zend_class_inttry.info union.
its probably safe to just check for __. This means we can skip lowering the function_name, which is hard to be binary
safe sine we don't store the length.
If we just did a zend_hash_exists lookup we'd be fine since its stored lowercased already :)
. Folding tags
. Parameter parsing
. SPL debug info
. array function improvements (not all yet)
. Improvements to function calling with call_user_* functions
. Improvements to debugging info in var_dump/print_r
# I propably forgot already something but this all was pretty close tied
# to each other so it wasn't possible to do it in parts.
