Here is the real elimination of the segmentation-fault on shutdown af…

…ter restoring modified internal functions.

This problem was fully described here http://pecl.php.net/bugs/bug.php?id=11632
but I see this bug occurs only after the second request to the test-page through fascgi (on the same worker process) or results in crash in cli mode for the each test execution.

The solution is to remove all user-defined functions out of the executor's global function table in a request shutdown function.

runkit.c

@@ -358,6 +358,18 @@ static int php_runkit_superglobal_dtor(char *pDest TSRMLS_DC)
 /* }}} */
 #endif /* PHP_RUNKIT_SUPERGLOBALS */
 
+/* {{{ php_runkit_delete_user_functions */
+int php_runkit_delete_user_functions(void *pDest TSRMLS_DC)
+{
+	if (pDest == NULL ||
+		((zend_function*)pDest)->type != ZEND_INTERNAL_FUNCTION) {
+		return ZEND_HASH_APPLY_REMOVE;
+	}
+
+	return ZEND_HASH_APPLY_KEEP;
+}
+/* }}} */
+
 /* {{{ PHP_RSHUTDOWN_FUNCTION
  */
 PHP_RSHUTDOWN_FUNCTION(runkit)
@@ -387,6 +399,8 @@ PHP_RSHUTDOWN_FUNCTION(runkit)
 		FREE_HASHTABLE(RUNKIT_G(replaced_internal_functions));
 		RUNKIT_G(replaced_internal_functions) = NULL;
 	}
+
+	zend_hash_apply(EG(function_table), php_runkit_delete_user_functions);
 #endif /* PHP_RUNKIT_MANIPULATION */
 
 	return SUCCESS;