Zend: mark callable zval* as const (php#21582)

Author: Girgias

Zend/zend_API.c

@@ -4031,7 +4031,7 @@ static zend_always_inline bool zend_is_callable_check_func(const zval *callable,
 }
 /* }}} */
 
-ZEND_API zend_string *zend_get_callable_name_ex(zval *callable, const zend_object *object) /* {{{ */
+ZEND_API zend_string *zend_get_callable_name_ex(const zval *callable, const zend_object *object) /* {{{ */
 {
 try_again:
 	switch (Z_TYPE_P(callable)) {
@@ -4089,7 +4089,7 @@ ZEND_API zend_string *zend_get_callable_name_ex(zval *callable, const zend_objec
 }
 /* }}} */
 
-ZEND_API zend_string *zend_get_callable_name(zval *callable) /* {{{ */
+ZEND_API zend_string *zend_get_callable_name(const zval *callable) /* {{{ */
 {
 	return zend_get_callable_name_ex(callable, NULL);
 }
@@ -4206,7 +4206,7 @@ ZEND_API bool zend_is_callable_at_frame(
 }
 /* }}} */
 
-ZEND_API bool zend_is_callable_ex(zval *callable, zend_object *object, uint32_t check_flags, zend_string **callable_name, zend_fcall_info_cache *fcc, char **error) /* {{{ */
+ZEND_API bool zend_is_callable_ex(const zval *callable, zend_object *object, uint32_t check_flags, zend_string **callable_name, zend_fcall_info_cache *fcc, char **error) /* {{{ */
 {
 	/* Determine callability at the first parent user frame. */
 	const zend_execute_data *frame = EG(current_execute_data);
@@ -4221,13 +4221,13 @@ ZEND_API bool zend_is_callable_ex(zval *callable, zend_object *object, uint32_t
 	return ret;
 }
 
-ZEND_API bool zend_is_callable(zval *callable, uint32_t check_flags, zend_string **callable_name) /* {{{ */
+ZEND_API bool zend_is_callable(const zval *callable, uint32_t check_flags, zend_string **callable_name) /* {{{ */
 {
 	return zend_is_callable_ex(callable, NULL, check_flags, callable_name, NULL, NULL);
 }
 /* }}} */
 
-ZEND_API zend_result zend_fcall_info_init(zval *callable, uint32_t check_flags, zend_fcall_info *fci, zend_fcall_info_cache *fcc, zend_string **callable_name, char **error) /* {{{ */
+ZEND_API zend_result zend_fcall_info_init(const zval *callable, uint32_t check_flags, zend_fcall_info *fci, zend_fcall_info_cache *fcc, zend_string **callable_name, char **error) /* {{{ */
 {
 	if (!zend_is_callable_ex(callable, NULL, check_flags, callable_name, fcc, error)) {
 		return FAILURE;

Zend/zend_API.h

@@ -410,13 +410,13 @@ ZEND_API ZEND_COLD void zend_wrong_property_read(const zval *object, zval *prope
 #define IS_CALLABLE_SUPPRESS_DEPRECATIONS (1<<1)
 
 ZEND_API void zend_release_fcall_info_cache(zend_fcall_info_cache *fcc);
-ZEND_API zend_string *zend_get_callable_name_ex(zval *callable, const zend_object *object);
-ZEND_API zend_string *zend_get_callable_name(zval *callable);
+ZEND_API zend_string *zend_get_callable_name_ex(const zval *callable, const zend_object *object);
+ZEND_API zend_string *zend_get_callable_name(const zval *callable);
 ZEND_API bool zend_is_callable_at_frame(
 		const zval *callable, zend_object *object, const zend_execute_data *frame,
 		uint32_t check_flags, zend_fcall_info_cache *fcc, char **error);
-ZEND_API bool zend_is_callable_ex(zval *callable, zend_object *object, uint32_t check_flags, zend_string **callable_name, zend_fcall_info_cache *fcc, char **error);
-ZEND_API bool zend_is_callable(zval *callable, uint32_t check_flags, zend_string **callable_name);
+ZEND_API bool zend_is_callable_ex(const zval *callable, zend_object *object, uint32_t check_flags, zend_string **callable_name, zend_fcall_info_cache *fcc, char **error);
+ZEND_API bool zend_is_callable(const zval *callable, uint32_t check_flags, zend_string **callable_name);
 ZEND_API const char *zend_get_module_version(const char *module_name);
 ZEND_API zend_result zend_get_module_started(const char *module_name);
 
@@ -701,7 +701,7 @@ ZEND_API zend_result _call_user_function_impl(zval *object, zval *function_name,
  * fci->params = NULL;
  * The callable_name argument may be NULL.
  */
-ZEND_API zend_result zend_fcall_info_init(zval *callable, uint32_t check_flags, zend_fcall_info *fci, zend_fcall_info_cache *fcc, zend_string **callable_name, char **error);
+ZEND_API zend_result zend_fcall_info_init(const zval *callable, uint32_t check_flags, zend_fcall_info *fci, zend_fcall_info_cache *fcc, zend_string **callable_name, char **error);
 
 /** Clear arguments connected with zend_fcall_info *fci
  * If free_mem is not zero then the params array gets free'd as well
@@ -2482,7 +2482,7 @@ static zend_always_inline bool zend_parse_arg_resource(zval *arg, zval **dest, b
 	return 1;
 }
 
-static zend_always_inline bool zend_parse_arg_func(zval *arg, zend_fcall_info *dest_fci, zend_fcall_info_cache *dest_fcc, bool check_null, char **error, bool free_trampoline)
+static zend_always_inline bool zend_parse_arg_func(const zval *arg, zend_fcall_info *dest_fci, zend_fcall_info_cache *dest_fcc, bool check_null, char **error, bool free_trampoline)
 {
 	if (check_null && UNEXPECTED(Z_TYPE_P(arg) == IS_NULL)) {
 		dest_fci->size = 0;