don't restrict unexpected EOF errors to the first line (closes #12216)

Lib/test/test_grammar.py

@@ -125,6 +125,13 @@ the \'lazy\' dog.\n\
         self.assertTrue(x is Ellipsis)
         self.assertRaises(SyntaxError, eval, ".. .")
 
+    def test_eof_error(self):
+        samples = ("def foo(", "\ndef foo(", "def foo(\n")
+        for s in samples:
+            with self.assertRaises(SyntaxError) as cm:
+                compile(s, "<test>", "exec")
+            self.assertIn("unexpected EOF", str(cm.exception))
+
 class GrammarTests(unittest.TestCase):
 
     # single_input: NEWLINE | simple_stmt | compound_stmt NEWLINE

Misc/NEWS

@@ -10,6 +10,8 @@ What's New in Python 3.3 Alpha 1?
 Core and Builtins
 -----------------
 
+- Issue #12216: Allow unexpected EOF errors to happen on any line of the file.
+
 - Issue #12199: The TryExcept and TryFinally and AST nodes have been unified
   into a Try node.
 

Parser/parsetok.c

@@ -232,7 +232,7 @@ parsetok(struct tok_state *tok, grammar *g, int start, perrdetail *err_ret,
     PyParser_Delete(ps);
 
     if (n == NULL) {
-        if (tok->lineno <= 1 && tok->done == E_EOF)
+        if (tok->done == E_EOF)
             err_ret->error = E_EOF;
         err_ret->lineno = tok->lineno;
         if (tok->buf != NULL) {