Skip this test on AIX even with var set

AIX adjusts the top address of the stack on the main thread in an
unpredictable way, and this is used to calculate the size for the
main thread.

Author: NattyNarwhal

Zend/tests/stack_limit/stack_limit_010.phpt

@@ -4,6 +4,9 @@ Stack limit 010 - Check stack size detection against known defaults
 zend_test
 --SKIPIF--
 <?php
+if (PHP_OS_FAMILY == "AIX") {
+    die("skip AIX adjusts top of stack (used for size) in unpredictable way");
+}
 if (!function_exists('zend_test_zend_call_stack_get')) die("skip zend_test_zend_call_stack_get() is not available");
 if (!getenv('STACK_LIMIT_DEFAULTS_CHECK')) { die('skip STACK_LIMIT_DEFAULTS_CHECK not set'); }
 ?>