Merged revisions 84214 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r84214 | amaury.forgeotdarc | 2010-08-19 23:32:38 +0200 (jeu., 19 août 2010) | 3 lines

  Add tests for r84209 (crashes in the Ast builder)
  Also remove one tab, and move a check closer to the possible failure.
........

Lib/test/test_syntax.py

@@ -476,6 +476,34 @@ Traceback (most recent call last):
    ...
 SyntaxError: keyword argument repeated
 
+Corner-cases that used to fail to raise the correct error:
+
+    >>> def f(*, x=lambda __debug__:0): pass
+    Traceback (most recent call last):
+    SyntaxError: assignment to keyword
+
+    >>> def f(*args:(lambda __debug__:0)): pass
+    Traceback (most recent call last):
+    SyntaxError: assignment to keyword
+
+    >>> def f(**kwargs:(lambda __debug__:0)): pass
+    Traceback (most recent call last):
+    SyntaxError: assignment to keyword
+
+    >>> with (lambda *:0): pass
+    Traceback (most recent call last):
+    SyntaxError: named arguments must follow bare *
+
+Corner-cases that used to crash:
+
+    >>> def f(**__debug__): pass
+    Traceback (most recent call last):
+    SyntaxError: assignment to keyword
+
+    >>> def f(*xx, __debug__): pass
+    Traceback (most recent call last):
+    SyntaxError: assignment to keyword
+
 """
 
 import re

Python/ast.c

@@ -873,14 +873,14 @@ ast_for_arguments(struct compiling *c, const node *n)
                 ch = CHILD(n, i+1);  /* tfpdef */
                 assert(TYPE(ch) == tfpdef || TYPE(ch) == vfpdef);
                 kwarg = NEW_IDENTIFIER(CHILD(ch, 0));
+                if (!kwarg)
+                    return NULL;
                 if (NCH(ch) > 1) {
                     /* there is an annotation on the kwarg */
                     kwargannotation = ast_for_expr(c, CHILD(ch, 2));
                     if (!kwargannotation)
                         return NULL;
                 }
-                if (!kwarg)
-                    return NULL;
                 i += 3;
                 break;
             default: