# HG changeset patch
# User Matthew Wild <mwild1@gmail.com>
# Date 1290566980 0
# Node ID afce5a550d18d5c2d87e552b64f03127abcf6a66
# Parent  5a928c1478adc97d792447dc2a8091af91054c59
OP_VARARG: Fix off-by-one

diff -r 5a928c1478ad -r afce5a550d18 lvm.js
--- a/lvm.js	Wed Nov 24 02:48:56 2010 +0000
+++ b/lvm.js	Wed Nov 24 02:49:40 2010 +0000
@@ -489,7 +489,7 @@
 				var A = INS_A(instruction);
 				var prevframe = this.callstack[this.callstack.length-2];
 				var base = frame.retAt+frame.f.numParameters;
-				var available = prevframe.reg.length - base;
+				var available = (prevframe.reg.length - base) - 1;
 				var wanted = INS_B(instruction)-1;
 				if(wanted < 0)
 					wanted = available;