Fix crash when php55-opcache is compiled with clang 6 or later.
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227723
--- a/Zend/zend_compile.h
+++ b/Zend/zend_compile.h
@@ -401,9 +401,6 @@
 
 #define EX(element) execute_data.element
 
-#define EX_TMP_VAR(ex, n)	   ((temp_variable*)(((char*)(ex)) + ((int)(n))))
-#define EX_TMP_VAR_NUM(ex, n)  (EX_TMP_VAR(ex, 0) - (1 + (n)))
-
 #define EX_CV_NUM(ex, n)       (((zval***)(((char*)(ex))+ZEND_MM_ALIGNED_SIZE(sizeof(zend_execute_data))))+(n))
 
 
--- a/Zend/zend_execute.h
+++ b/Zend/zend_execute.h
@@ -71,6 +71,15 @@
 ZEND_API char * zend_verify_arg_class_kind(const zend_arg_info *cur_arg_info, ulong fetch_type, const char **class_name, zend_class_entry **pce TSRMLS_DC);
 ZEND_API int zend_verify_arg_error(int error_type, const zend_function *zf, zend_uint arg_num, const char *need_msg, const char *need_kind, const char *given_msg, const char *given_kind TSRMLS_DC);
 
+static zend_always_inline temp_variable *EX_TMP_VAR(void *ex, int n)
+{
+	return (temp_variable *)((zend_uintptr_t)ex + n);
+}
+static inline temp_variable *EX_TMP_VAR_NUM(void *ex, int n)
+{
+	return (temp_variable *)((zend_uintptr_t)ex - (1 + n) * sizeof(temp_variable));
+}
+
 static zend_always_inline void i_zval_ptr_dtor(zval *zval_ptr ZEND_FILE_LINE_DC)
 {
 	if (!Z_DELREF_P(zval_ptr)) {
