Fix GH-7759: Incorrect return types for hash() and hash_hmac()

`hash()` and `hash_hmac()` never return `false`; only `hash_file()` and
`hash_hmac_file()` return `false` in case the data cannot be read.

Closes GH-7760.

Author: cmb69

NEWS

@@ -7,6 +7,10 @@ PHP                                                                        NEWS
   . Fixed bug #81585 (cached_chunks are not counted to real_size on shutdown).
     (cmb)
 
+- Hash:
+  . Fixed bug GH-7759 (Incorrect return types for hash() and hash_hmac()).
+    (cmb)
+
 - PDO_PGSQL:
   . Fixed error message allocation of PDO PgSQL. (SATO Kentaro)
 

ext/hash/hash.stub.php

@@ -2,11 +2,11 @@
 
 /** @generate-function-entries */
 
-function hash(string $algo, string $data, bool $binary = false): string|false {}
+function hash(string $algo, string $data, bool $binary = false): string {}
 
 function hash_file(string $algo, string $filename, bool $binary = false): string|false {}
 
-function hash_hmac(string $algo, string $data, string $key, bool $binary = false): string|false {}
+function hash_hmac(string $algo, string $data, string $key, bool $binary = false): string {}
 
 function hash_hmac_file(string $algo, string $data, string $key, bool $binary = false): string|false {}
 

ext/hash/hash_arginfo.h

@@ -1,7 +1,7 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 9352e0ac98e2ac53dc15d5024f9ef0c8092c4e9c */
+ * Stub hash: f73c6fa1a4ac1ca93f87775bbe69fbdb2deb5746 */
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_hash, 0, 2, MAY_BE_STRING|MAY_BE_FALSE)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_hash, 0, 2, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO(0, algo, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO(0, data, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, binary, _IS_BOOL, 0, "false")
@@ -13,14 +13,19 @@ ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_hash_file, 0, 2, MAY_BE_STRING|M
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, binary, _IS_BOOL, 0, "false")
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_hash_hmac, 0, 3, MAY_BE_STRING|MAY_BE_FALSE)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_hash_hmac, 0, 3, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO(0, algo, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO(0, data, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO(0, key, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, binary, _IS_BOOL, 0, "false")
 ZEND_END_ARG_INFO()
 
-#define arginfo_hash_hmac_file arginfo_hash_hmac
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_hash_hmac_file, 0, 3, MAY_BE_STRING|MAY_BE_FALSE)
+	ZEND_ARG_TYPE_INFO(0, algo, IS_STRING, 0)
+	ZEND_ARG_TYPE_INFO(0, data, IS_STRING, 0)
+	ZEND_ARG_TYPE_INFO(0, key, IS_STRING, 0)
+	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, binary, _IS_BOOL, 0, "false")
+ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(arginfo_hash_init, 0, 1, HashContext, 0)
 	ZEND_ARG_TYPE_INFO(0, algo, IS_STRING, 0)

ext/opcache/Optimizer/zend_func_info.c

@@ -581,9 +581,9 @@ static const func_info_t func_infos[] = {
 	F1("ob_gzhandler",                          MAY_BE_FALSE | MAY_BE_STRING),
 
 	/* ext/hash */
-	F1("hash",                                  MAY_BE_FALSE | MAY_BE_STRING),
+	F1("hash",                                  MAY_BE_STRING),
 	F1("hash_file",                             MAY_BE_FALSE | MAY_BE_STRING),
-	F1("hash_hmac",                             MAY_BE_FALSE | MAY_BE_STRING),
+	F1("hash_hmac",                             MAY_BE_STRING),
 	F1("hash_hmac_algos",                       MAY_BE_ARRAY | MAY_BE_ARRAY_KEY_LONG | MAY_BE_ARRAY_OF_STRING),
 	F1("hash_hmac_file",                        MAY_BE_FALSE | MAY_BE_STRING),
 	F1("hash_hkdf",                             MAY_BE_STRING),