From f4123b2fc2a662c08e3d7edc721241c251a22c4b Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Mon, 31 Mar 2025 13:44:41 -0300
Subject: Growth factor of 1.5 for stack and lexical buffer

---
 llex.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'llex.c')

diff --git a/llex.c b/llex.c
index 1c4227ca..4b5a1f75 100644
--- a/llex.c
+++ b/llex.c
@@ -62,10 +62,10 @@ static l_noret lexerror (LexState *ls, const char *msg, int token);
 static void save (LexState *ls, int c) {
   Mbuffer *b = ls->buff;
   if (luaZ_bufflen(b) + 1 > luaZ_sizebuffer(b)) {
-    size_t newsize;
-    if (luaZ_sizebuffer(b) >= MAX_SIZE/2)
+    size_t newsize = luaZ_sizebuffer(b);  /* get old size */;
+    if (newsize >= (MAX_SIZE/3 * 2))  /* larger than MAX_SIZE/1.5 ? */
       lexerror(ls, "lexical element too long", 0);
-    newsize = luaZ_sizebuffer(b) * 2;
+    newsize += (newsize >> 1);  /* new size is 1.5 times the old one */
     luaZ_resizebuffer(ls->L, b, newsize);
   }
   b->buffer[luaZ_bufflen(b)++] = cast_char(c);
-- 
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