Declare tentative return types for ext/fileinfo

Relates to GH-6985

Author: kocsismate

ext/fileinfo/fileinfo.stub.php

@@ -9,30 +9,30 @@ public function __construct(int $flags = FILEINFO_NONE, ?string $magic_database
 
     /**
      * @param resource|null $context
-     * @return string|false
+     * @tentative-return-type
      * @alias finfo_file
      */
-    public function file(string $filename, int $flags = FILEINFO_NONE, $context = null) {}
+    public function file(string $filename, int $flags = FILEINFO_NONE, $context = null): string|false {}
 
     /**
      * @param resource|null $context
-     * @return string|false
+     * @tentative-return-type
      * @alias finfo_buffer
      */
-    public function buffer(string $string, int $flags = FILEINFO_NONE, $context = null) {}
+    public function buffer(string $string, int $flags = FILEINFO_NONE, $context = null): string|false {}
 
     /**
      * @return bool
      * @alias finfo_set_flags
      */
-    public function set_flags(int $flags) {}
+    public function set_flags(int $flags) {} // TODO make return type void
 }
 
 function finfo_open(int $flags = FILEINFO_NONE, ?string $magic_database = null): finfo|false {}
 
 function finfo_close(finfo $finfo): bool {}
 
-function finfo_set_flags(finfo $finfo, int $flags): bool {}
+function finfo_set_flags(finfo $finfo, int $flags): bool {} // TODO make return type void
 
 /**
  * @param resource|null $context

ext/fileinfo/fileinfo_arginfo.h

@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 2cd166d444d7324a9fe70170db434c05ccfbf386 */
+ * Stub hash: 933465e008723d0991761b5779a80e5c72248a9c */
 
 ZEND_BEGIN_ARG_WITH_RETURN_OBJ_TYPE_MASK_EX(arginfo_finfo_open, 0, 0, finfo, MAY_BE_FALSE)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, flags, IS_LONG, 0, "FILEINFO_NONE")
@@ -38,13 +38,13 @@ ZEND_BEGIN_ARG_INFO_EX(arginfo_class_finfo___construct, 0, 0, 0)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, magic_database, IS_STRING, 1, "null")
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_finfo_file, 0, 0, 1)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_MASK_EX(arginfo_class_finfo_file, 0, 1, MAY_BE_STRING|MAY_BE_FALSE)
 	ZEND_ARG_TYPE_INFO(0, filename, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, flags, IS_LONG, 0, "FILEINFO_NONE")
 	ZEND_ARG_INFO_WITH_DEFAULT_VALUE(0, context, "null")
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_finfo_buffer, 0, 0, 1)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_MASK_EX(arginfo_class_finfo_buffer, 0, 1, MAY_BE_STRING|MAY_BE_FALSE)
 	ZEND_ARG_TYPE_INFO(0, string, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, flags, IS_LONG, 0, "FILEINFO_NONE")
 	ZEND_ARG_INFO_WITH_DEFAULT_VALUE(0, context, "null")