From: Christian Heimes <christian@cheimes.de>
Date: Mon, 22 Jul 2013 08:30:14 +0000 (+0200)
Subject: Add sanity check to PyGrammar_LabelRepr() in order to catch invalid tokens when debugging
X-Git-Tag: v3.4.0a1~110^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=53d2dc4045f6793d166b2806d7726c45cdea74e4;p=thirdparty%2FPython%2Fcpython.git

Add sanity check to PyGrammar_LabelRepr() in order to catch invalid tokens when debugging
a new grammar.
CID 715360
---

diff --git a/Parser/grammar1.c b/Parser/grammar1.c
index 1f7d264be927..17e2ba9f926b 100644
--- a/Parser/grammar1.c
+++ b/Parser/grammar1.c
@@ -45,7 +45,7 @@ PyGrammar_LabelRepr(label *lb)
         else
             return lb->lb_str;
     }
-    else {
+    else if (lb->lb_type < N_TOKENS) {
         if (lb->lb_str == NULL)
             return _PyParser_TokenNames[lb->lb_type];
         else {
@@ -54,4 +54,7 @@ PyGrammar_LabelRepr(label *lb)
             return buf;
         }
     }
+    else {
+        Py_FatalError("invalid label");
+    }
 }