Zend/zend_operators: make several pointers const

Author: MaxKellermann

Zend/zend_operators.c

@@ -2614,13 +2614,13 @@ ZEND_API zend_result ZEND_FASTCALL decrement_function(zval *op1) /* {{{ */
 }
 /* }}} */
 
-ZEND_API int ZEND_FASTCALL zend_is_true(zval *op) /* {{{ */
+ZEND_API int ZEND_FASTCALL zend_is_true(const zval *op) /* {{{ */
 {
 	return (int) i_zend_is_true(op);
 }
 /* }}} */
 
-ZEND_API bool ZEND_FASTCALL zend_object_is_true(zval *op) /* {{{ */
+ZEND_API bool ZEND_FASTCALL zend_object_is_true(const zval *op) /* {{{ */
 {
 	zend_object *zobj = Z_OBJ_P(op);
 	zval tmp;

Zend/zend_operators.h

@@ -362,13 +362,13 @@ static zend_always_inline bool try_convert_to_string(zval *op) {
 #define convert_to_string(op) if (Z_TYPE_P(op) != IS_STRING) { _convert_to_string((op)); }
 
 
-ZEND_API int ZEND_FASTCALL zend_is_true(zval *op);
-ZEND_API bool ZEND_FASTCALL zend_object_is_true(zval *op);
+ZEND_API int ZEND_FASTCALL zend_is_true(const zval *op);
+ZEND_API bool ZEND_FASTCALL zend_object_is_true(const zval *op);
 
 #define zval_is_true(op) \
 	zend_is_true(op)
 
-static zend_always_inline bool i_zend_is_true(zval *op)
+static zend_always_inline bool i_zend_is_true(const zval *op)
 {
 	bool result = 0;