Z_UNI* are the right macros to use.

diff --git a/Zend/zend_builtin_functions.c b/Zend/zend_builtin_functions.c
index 10296d09a983b1b260af9cb545dd527c010d8746..1fea4f6c2031d35f8232dbb8cea374fdaf8bb3cc 100644 (file)
--- a/Zend/zend_builtin_functions.c
+++ b/Zend/zend_builtin_functions.c
@@ -921,7 +921,7 @@ ZEND_FUNCTION(method_exists)
        if (Z_TYPE_PP(klass) == IS_OBJECT) {
                ce = Z_OBJCE_PP(klass);
        } else if (Z_TYPE_PP(klass) == IS_STRING || Z_TYPE_PP(klass) == IS_UNICODE) {
-               if (zend_u_lookup_class(Z_TYPE_PP(klass), Z_STRVAL_PP(klass), Z_STRLEN_PP(klass), &pce TSRMLS_CC) == FAILURE) {
+               if (zend_u_lookup_class(Z_TYPE_PP(klass), Z_UNIVAL_PP(klass), Z_UNILEN_PP(klass), &pce TSRMLS_CC) == FAILURE) {
                        RETURN_FALSE;
                }
                ce = *pce;