Fix crash with walrus + await + with (#3473)

[etc/vim.git] / src / blib2to3 / pgen2 / grammar.py

diff --git a/src/blib2to3/pgen2/grammar.py b/src/blib2to3/pgen2/grammar.py
index 56851070933a708d7a0fadce36bdb6c6ffd6e4c5..337a64f17269c80005c295e757949dc086dc7c19 100644 (file)
--- a/src/blib2to3/pgen2/grammar.py
+++ b/src/blib2to3/pgen2/grammar.py
@@ -92,6 +92,7 @@ class Grammar(object):
         self.soft_keywords: Dict[str, int] = {}
         self.tokens: Dict[int, int] = {}
         self.symbol2label: Dict[str, int] = {}
         self.soft_keywords: Dict[str, int] = {}
         self.tokens: Dict[int, int] = {}
         self.symbol2label: Dict[str, int] = {}

+        self.version: Tuple[int, int] = (0, 0)

         self.start = 256
         # Python 3.7+ parses async as a keyword, not an identifier
         self.async_keywords = False
         self.start = 256
         # Python 3.7+ parses async as a keyword, not an identifier
         self.async_keywords = False


@@ -145,6 +146,7 @@ class Grammar(object):
         new.labels = self.labels[:]
         new.states = self.states[:]
         new.start = self.start
         new.labels = self.labels[:]
         new.states = self.states[:]
         new.start = self.start

+        new.version = self.version

         new.async_keywords = self.async_keywords
         return new
 
         new.async_keywords = self.async_keywords
         return new