From bf59f0ed282f9c9b1ae0660e5af0ac86c0d247b5 Mon Sep 17 00:00:00 2001
From: Neven Sajko <nsajko@gmail.com>
Date: Sun, 25 Aug 2019 14:30:36 +0000
Subject: cmd/yacc: correctly detect end of file in gettok

This prevents an infinite loop.

Change-Id: I7eda6b9d032ca0daeb24b555954330d07f35c78b
---
 src/cmd/yacc.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src')

diff --git a/src/cmd/yacc.c b/src/cmd/yacc.c
index 32698c2a..bd3f6aa4 100644
--- a/src/cmd/yacc.c
+++ b/src/cmd/yacc.c
@@ -1805,6 +1805,8 @@ begin:
 			}
 		} else
 			return c;
+		if(c == Beof)
+			return ENDFILE;
 		Bungetrune(finput);
 	}
 	tokname[i] = 0;
-- 
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