From 4a3195e49226715e3fe712497f904b27d5e410ea Mon Sep 17 00:00:00 2001
From: daurnimator <quae@daurnimator.com>
Date: Fri, 12 May 2017 12:59:31 +1000
Subject: src/ldebug.js: Off by one error on symbolic execution

Fixes #29
---
 src/ldebug.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ldebug.js b/src/ldebug.js
index 2369595..b26a62f 100644
--- a/src/ldebug.js
+++ b/src/ldebug.js
@@ -531,7 +531,7 @@ const varinfo = function(L, o) {
         kind = getupvalname(L, ci, o);  /* check whether 'o' is an upvalue */
         let stkid = isinstack(L, ci, o);
         if (!kind && stkid)  /* no? try a register */
-            kind = getobjname(ci.func.value.p, ci.pcOff, stkid - ci.l_base);
+            kind = getobjname(ci.func.value.p, ci.pcOff - 1, stkid - ci.l_base);
     }
 
     return kind ? lobject.luaO_pushfstring(L, defs.to_luastring(" (%s '%s')", true), kind.funcname, kind.name) : defs.to_luastring("", true);
-- 
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