gen_stub: Don't use $aliasMap during verification

Some functions have multiple aliases, while the $aliasMap can
only record one.

Methodsynopsis generation probably shouldn't use it either, but
at least that case seems to only be interested in whether there
is an alias at all.

Author: nikic

build/gen_stub.php

@@ -1870,6 +1870,7 @@ function initPhpParser() {
         /** @var FuncInfo $funcInfo */
         $funcMap[$funcInfo->name->__toString()] = $funcInfo;
 
+        // TODO: Don't use aliasMap for methodsynopsis?
         if ($funcInfo->aliasType === "alias") {
             $aliasMap[$funcInfo->alias->__toString()] = $funcInfo;
         }
@@ -1879,7 +1880,11 @@ function initPhpParser() {
 if ($verify) {
     $errors = [];
 
-    foreach ($aliasMap as $aliasFunc) {
+    foreach ($funcMap as $aliasFunc) {
+        if ($aliasFunc->aliasType !== "alias") {
+            continue;
+        }
+
         if (!isset($funcMap[$aliasFunc->alias->__toString()])) {
             $errors[] = "Aliased function {$aliasFunc->alias}() cannot be found";
             continue;

ext/standard/basic_functions_arginfo.h

@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 21e54280829776de72313b96e38ad2aee60bd0ee */
+ * Stub hash: 4e471966d507762dd6fdd2fc4200c8430fac97f4 */
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_set_time_limit, 0, 1, _IS_BOOL, 0)
 	ZEND_ARG_TYPE_INFO(0, seconds, IS_LONG, 0)