EX(function_state).function is supposed to be a pointer to the op_array
that you passed to execute().
Any chance the op_array is somehow deleted by mistake? Did you try looking
at EX(function_state) and EX(function_state).function to understand why
it's dying?
At 03:02 PM 5/19/2002, Wez Furlong wrote:
>I'm in the process of adding IActiveScriptError support to my active
>script
>sapi. The way the sapi works is by compiling "scriptlets" into
>zend_op_arrays
>and then, at a later time, uses zend_execute to execute them.
>
>This works perfectly when the script has no errors :-)
>
>If I deliberately add a scriplet that tries to call an undefined
>function,
>the code is compiled correctly, but when it is executed, the engine
>triggers
>a "call to undefined function error" (that's fine), but then I end up
>with a
>segfault:
>
>zend_execute.c:
>do_fcall_common:
>{
> zval **original_return_value;
> int return_value_used = RETURN_VALUE_USED(EX(opline));
>
> zend_ptr_stack_n_push(&EG(argument_stack), 2,
> (void *) EX(opline)->extended_value, NULL);
>
> EX(Ts)[EX(opline)->result.u.var].var.ptr_ptr =
> &EX(Ts)[EX(opline)->result.u.var].var.ptr;
>
> // Segfault on this next line
> if (EX(function_state).function->type==ZEND_INTERNAL_FUNCTION) {
>
>I suspect this probably has something to do with the way that the
>execution
>environment is setup. The code I'm using is this:
>
> zval *retval_ptr = NULL;
> zend_op_array *active_op_array = EG(active_op_array);
> zend_function_state *function_state_ptr = EG(function_state_ptr);
> zval **return_value_ptr_ptr =
>EG(return_value_ptr_ptr);
> zend_op **opline_ptr = EG(opline_ptr);
>
> EG(return_value_ptr_ptr) = &retval_ptr;
> EG(active_op_array) = frag->opcodes;
> EG(no_extensions) = 1;
>
> zend_execute(frag->opcodes TSRMLS_CC);
>
> EG(no_extensions) = 0;
> EG(opline_ptr) = opline_ptr;
> EG(active_op_array) = active_op_array;
> EG(function_state_ptr) = function_state_ptr;
> EG(return_value_ptr_ptr) = return_value_ptr_ptr;
>
> if (retval_ptr) {
> zval_ptr_dtor(&retval_ptr);
> }
>
>That works fine if there are no errors or calls to undefined functions;
>it's just when there are errors that I run into problems.
>Could this error also be attributed to the way that the op_array was
>compiled? I'm using compile_string to do that part.
>
>Is there anything in particular that I should do to make this work?
>The sapi framework is initialized in a similar way to the ISAPI sapi,
>in case that helps.
>
>--Wez.
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