From 42c72b7b0d9c1b6910dd5b845dab21366a3cde92 Mon Sep 17 00:00:00 2001
From: James R <justsomejames2@gmail.com>
Date: Fri, 20 Nov 2020 19:17:32 -0800
Subject: [PATCH] Lua: fix crash with unary not (~) on boolean constant/nil and
let it work on boolean/nil values in general
---
src/blua/lvm.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/src/blua/lvm.c b/src/blua/lvm.c
index 46a015c1eb..df0acb37ed 100644
--- a/src/blua/lvm.c
+++ b/src/blua/lvm.c
@@ -541,11 +541,14 @@ void luaV_execute (lua_State *L, int nexeccalls) {
continue;
}
case OP_BNOT: {
- TValue *rb = RB(i);
+ TValue *rb = RKB(i);
if (ttisnumber(rb)) {
lua_Number nb = nvalue(rb);
setnvalue(ra, luai_numnot(nb));
}
+ else if (ttisboolean(rb) || ttisnil(rb)) {
+ setbvalue(ra, l_isfalse(rb));
+ }
else {
Protect(Arith(L, ra, rb, rb, TM_NOT));
}
--
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