I writing simple php extension. I have crash with bellow code. Segfault occurs only with enebled xdebug:

[code]
ONPHP_METHOD(QuerySkeleton, where)
{
zval where, whereLogic, exp, logic;

if (
    zend_parse_parameters(
        ZEND_NUM_ARGS() TSRMLS_CC,
        "z|z",
        &exp,
        &logic
    )
    == FAILURE
) {
    WRONG_PARAM_COUNT;
}

if (
    Z_TYPE_P(logic) == IS_NULL
    || (ZEND_NUM_ARGS() == 1)
) {
    ZVAL_NULL(logic);
}

where = ONPHP_READ_PROPERTY(getThis(), "where");

if (
    zend_hash_num_elements(Z_ARRVAL_P(where)) != 0
    && Z_TYPE_P(logic) == IS_NULL
) {
    zend_throw_exception_ex(
        onphp_ce_WrongArgumentException,
        0 TSRMLS_CC,
        "you have to specify expression logic"
    );
    return;
} else {
    if (
        zend_hash_num_elements(Z_ARRVAL_P(where)) == 0
        && Z_TYPE_P(logic) != IS_NULL
    ) {
        ZVAL_NULL(logic);
    }

    whereLogic = ONPHP_READ_PROPERTY(getThis(), "whereLogic");

    if (Z_TYPE_P(logic) != IS_NULL)
        add_next_index_zval(whereLogic, logic);
    else
        add_next_index_null(whereLogic);

    add_next_index_zval(where, exp);
}

RETURN_ZVAL(getThis(), 1, 0);

}
[/code]

Segfault occurs in the branch:

zend_hash_num_elements(Z_ARRVAL_P(where)) != 0
&& Z_TYPE_P(logic) == IS_NULL
) {
zend_throw_exception_ex(
onphp_ce_WrongArgumentException,
0 TSRMLS_CC,
"you have to specify expression logic"
);
return;
}

Exception does not throw.

Without xdebug code work correctly.

Full Version of class here:

http://svn.shadanakar.org/filedetails.php?repname=onPHP&path=%2Ftrunk%2Fext%2Fsrc%2Fcore%2FOSQL%2FQuerySkeleton.c&rev=4300