From fb7e5b76c9d41108c399cf4d16470018b717007b Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Wed, 26 Jun 2024 14:46:44 -0300
Subject: Clearer code for controlling maximum registers

Plus, added a test to check that limit.
---
 lcode.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

(limited to 'lcode.c')

diff --git a/lcode.c b/lcode.c
index 79c15132..bc0a3341 100644
--- a/lcode.c
+++ b/lcode.c
@@ -31,10 +31,6 @@
 #include "lvm.h"
 
 
-/* Maximum number of registers in a Lua function (must fit in 8 bits) */
-#define MAXREGS		255
-
-
 #define hasjumps(e)	((e)->t != (e)->f)
 
 
@@ -466,7 +462,7 @@ static int luaK_codek (FuncState *fs, int reg, int k) {
 void luaK_checkstack (FuncState *fs, int n) {
   int newstack = fs->freereg + n;
   if (newstack > fs->f->maxstacksize) {
-    if (newstack >= MAXREGS)
+    if (newstack > MAX_FSTACK)
       luaX_syntaxerror(fs->ls,
         "function or expression needs too many registers");
     fs->f->maxstacksize = cast_byte(newstack);
-- 
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