[3.11] gh-109120: Fix syntax error in handlinh of incorrect star expressions… (#117464)

gh-109120: Fix syntax error in handlinh of incorrect star expressions (#117444)

(cherry picked from commit c97d3af239)

Lib/test/test_syntax.py

@@ -1725,22 +1725,22 @@
     >>> A[*(1:2)]
     Traceback (most recent call last):
         ...
-    SyntaxError: invalid syntax
+    SyntaxError: Invalid star expression
     >>> A[*(1:2)] = 1
     Traceback (most recent call last):
         ...
-    SyntaxError: invalid syntax
+    SyntaxError: Invalid star expression
     >>> del A[*(1:2)]
     Traceback (most recent call last):
         ...
-    SyntaxError: invalid syntax
+    SyntaxError: Invalid star expression
 
 A[*:] and A[:*]
 
     >>> A[*:]
     Traceback (most recent call last):
         ...
-    SyntaxError: invalid syntax
+    SyntaxError: Invalid star expression
     >>> A[:*]
     Traceback (most recent call last):
         ...
@@ -1751,7 +1751,7 @@
     >>> A[*]
     Traceback (most recent call last):
         ...
-    SyntaxError: invalid syntax
+    SyntaxError: Invalid star expression
 
 A[**]
 
@@ -1833,11 +1833,23 @@ def f(x: *b)
 
    >>> f(**x, *)
    Traceback (most recent call last):
-   SyntaxError: iterable argument unpacking follows keyword argument unpacking
+   SyntaxError: Invalid star expression
 
    >>> f(x, *:)
    Traceback (most recent call last):
-   SyntaxError: invalid syntax
+   SyntaxError: Invalid star expression
+
+   >>> f(x, *)
+   Traceback (most recent call last):
+   SyntaxError: Invalid star expression
+
+   >>> f(x = 5, *)
+   Traceback (most recent call last):
+   SyntaxError: Invalid star expression
+
+   >>> f(x = 5, *:)
+   Traceback (most recent call last):
+   SyntaxError: Invalid star expression
 """
 
 import re