From 1ce57628b21433c0cf7e418b0359766e241106ce Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Wed, 6 Feb 2013 11:37:39 -0200
Subject: comments
---
lparser.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
(limited to 'lparser.c')
diff --git a/lparser.c b/lparser.c
index ef3eedf8..b83b0c33 100644
--- a/lparser.c
+++ b/lparser.c
@@ -1,5 +1,5 @@
/*
-** $Id: lparser.c,v 2.128 2012/05/20 14:51:23 roberto Exp roberto $
+** $Id: lparser.c,v 2.129 2012/08/06 13:36:34 roberto Exp roberto $
** Lua Parser
** See Copyright Notice in lua.h
*/
@@ -512,12 +512,15 @@ static Proto *addprototype (LexState *ls) {
/*
-** codes instruction to create new closure in parent function
+** codes instruction to create new closure in parent function.
+** The OP_CLOSURE instruction must use the last available register,
+** so that, if it invokes the GC, the GC knows which registers
+** are in use at that time.
*/
static void codeclosure (LexState *ls, expdesc *v) {
FuncState *fs = ls->fs->prev;
init_exp(v, VRELOCABLE, luaK_codeABx(fs, OP_CLOSURE, 0, fs->np - 1));
- luaK_exp2nextreg(fs, v); /* fix it at stack top (for GC) */
+ luaK_exp2nextreg(fs, v); /* fix it at the last register */
}
--
cgit v1.2.3-55-g6feb