Fix stub for Phar::setStub()

This fixes multiple issues:
 * The first parameter may be resource|string.
 * It's an overloaded signature. The second parameter cannot be
   passed if the first one is a string. Use UNKNOWN default
   value for that reason.
 * Make parameter names in PharData::setStub() match those in
   Phar.

Closes phpGH-6596.

Author: dktapps

ext/phar/phar_object.stub.php

@@ -134,10 +134,10 @@ public function setMetadata(mixed $metadata) {}
     public function setSignatureAlgorithm(int $algo, ?string $privateKey = null) {}
 
     /**
-     * @param resource $stub
+     * @param resource|string $stub
      * @return bool
      */
-    public function setStub($stub, int $length = -1) {}
+    public function setStub($stub, int $length = UNKNOWN) {}
 
     /** @return void */
     public function startBuffering() {}
@@ -408,11 +408,11 @@ public function setMetadata(mixed $metadata) {}
     public function setSignatureAlgorithm(int $algo, ?string $privateKey = null) {}
 
     /**
-     * @param resource $newstub
+     * @param resource|string $stub
      * @return bool
      * @implementation-alias Phar::setStub
      */
-    public function setStub($newstub, int $maxlen = -1) {}
+    public function setStub($stub, int $length = UNKNOWN) {}
 
     /**
      * @return void

ext/phar/phar_object_arginfo.h

@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: e06a2ea3d97778e61aca0f91fda7b72c29ef171d */
+ * Stub hash: 05d4689eb65b244c41c68c13ff39feca6a79a7e1 */
 
 ZEND_BEGIN_ARG_INFO_EX(arginfo_class_Phar___construct, 0, 0, 1)
 	ZEND_ARG_TYPE_INFO(0, filename, IS_STRING, 0)
@@ -139,7 +139,7 @@ ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_INFO_EX(arginfo_class_Phar_setStub, 0, 0, 1)
 	ZEND_ARG_INFO(0, stub)
-	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, length, IS_LONG, 0, "-1")
+	ZEND_ARG_TYPE_INFO(0, length, IS_LONG, 0)
 ZEND_END_ARG_INFO()
 
 #define arginfo_class_Phar_startBuffering arginfo_class_Phar___destruct
@@ -292,10 +292,7 @@ ZEND_END_ARG_INFO()
 
 #define arginfo_class_PharData_setSignatureAlgorithm arginfo_class_Phar_setSignatureAlgorithm
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_class_PharData_setStub, 0, 0, 1)
-	ZEND_ARG_INFO(0, newstub)
-	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, maxlen, IS_LONG, 0, "-1")
-ZEND_END_ARG_INFO()
+#define arginfo_class_PharData_setStub arginfo_class_Phar_setStub
 
 #define arginfo_class_PharData_startBuffering arginfo_class_Phar___destruct