From 65d1aa7a779b30bf5b0e7b968b3980b702b08b2c Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Tue, 9 Apr 2019 18:40:39 -0300
Subject: Syntax should not allow numbers touching identifiers

Code like 'a = 1print()' should not be accepted.
---
 llex.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'llex.c')

diff --git a/llex.c b/llex.c
index b0bab377..bb81cec4 100644
--- a/llex.c
+++ b/llex.c
@@ -228,6 +228,8 @@ static int read_numeral (LexState *ls, SemInfo *seminfo) {
       save_and_next(ls);
     else break;
   }
+  if (lislalnum(ls->current))  /* is numeral touching an alpha num? */
+    save_and_next(ls);  /* force an error */
   save(ls, '\0');
   if (luaO_str2num(luaZ_buffer(ls->buff), &obj) == 0)  /* format error? */
     lexerror(ls, "malformed number", TK_FLT);
-- 
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