Hi:
you can core dump the backtrace, then exam the related hash table to
find out what's going wrong there.
and some maybe un-relevant issues:
1. plz put all var declarations at the begining of a block (C89)
2. do not use "this" keyword as variable name (it's C++ keyword)
thanks
On Tue, Apr 17, 2012 at 2:12 PM, Yader Hernandez
<yader.hernan...@gmail.com> wrote:
> Hello,
>
> I'm trying to create an ArrayList as an extension. I'm currently
> implementing ArrayList::contains(mixed $element) but I'm running into a
> blocking issue.
>
> It's currently causing a segfault when you call contains. I've tried to
> track down what I'm doing wrong, but I've had no luck with it.
>
> When running gdb this is what I get:
>
> Program received signal EXC_BAD_ACCESS, Could not access memory.
> Reason: 13 at address: 0x00000000000000000x00000001005812ca in
> _zend_is_inconsistent
>
> /* {{{ proto public boolean ArrayList::contain(mixed $element[, boolean
> strict])
> Returns true if this list contains the specified element. */
> ZEND_METHOD(arraymap_class, contains) {
> zval *element;
> zend_bool strict = 0; /* strict comparison or not */
>
> if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z|b", &element,
> &strict) == FAILURE) {
> RETURN_FALSE;
> }
>
> zval *this = getThis();
> arraylist_object *intern;
>
> intern = (arraylist_object *) zend_object_store_get_object(this
> TSRMLS_CC);
>
> /* Don't use "ht" as a variable, it's already being used. All ZEND_METHOD
> have "ht" defined. */
> HashTable *hash_table = Z_ARRVAL_P(intern->elements);
> HashPosition pos;
> zval **current;
> zval res; /* comparison result */
>
> int (*is_equal_func)(zval *, zval *, zval * TSRMLS_DC) =
> is_equal_function;
>
> if (strict) {
> is_equal_func = is_identical_function;
> }
>
> zend_hash_internal_pointer_reset_ex(hash_table, &pos);
>
> while (zend_hash_get_current_data_ex(hash_table, (void **)¤t, &pos)
> == SUCCESS) {
> is_equal_func(&res, element, *current TSRMLS_CC);
>
> if (Z_LVAL(res)) {
> RETURN_TRUE;
> }
>
> zend_hash_move_forward_ex(hash_table, &pos);
> }
>
> RETURN_FALSE;
> }
>
> I can't seem to spot any errors with this implementation. The next thing I
> thought that could be wrong is how I'm creating elements pointer, but that
> seems correct too:
>
> static zend_object_value create_arraylist_object(zend_class_entry *ce
> TSRMLS_DC) /* {{{ */
> {
> zend_object_value retval;
> arraylist_object *intern;
>
> intern = emalloc(sizeof(arraylist_object));
>
> intern->size = 0;
>
> zend_object_std_init(&intern->std, ce TSRMLS_CC);
>
> ALLOC_INIT_ZVAL(intern->elements);
> array_init(intern->elements);
>
> intern->std.ce = ce;
>
> object_properties_init(&intern->std, ce);
>
> retval.handle = zend_objects_store_put(intern, NULL,
> destroy_arraylist_object, NULL TSRMLS_CC);
> retval.handlers = &arraylist_object_handlers;
>
> return retval;
> }
> /* }}} */
>
> I'm not getting any compilation errors or any type of warnings. Everything
> seems to be glueing itself correctly.
>
> I'm hoping someone can see what I'm doing wrong so that I can move forward
> with this.
>
> thanks!
--
Laruence Xinchen Hui
http://www.laruence.com/
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