lua bugfix, see http://lua-users.org/lists/lua-l/2017-08/msg00065.html

cloudwu · cloudwu · commit 525279e9dd27 · 2017-08-24T10:50:36.000+08:00
diff --git a/3rd/lua/lgc.c b/3rd/lua/lgc.c
@@ -652,7 +652,7 @@ static void clearkeys (global_State *g, GCObject *l, GCObject *f) {
     Table *h = gco2t(l);
     Node *n, *limit = gnodelast(h);
     for (n = gnode(h, 0); n < limit; n++) {
-      if (!ttisnil(gval(n)) && (iscleared(g, gkey(n)))) {
+      if (iscleared(g, gkey(n))) {
         setnilvalue(gval(n));  /* remove value ... */
         removeentry(n);  /* and remove entry from table */
       }

Original file line number	Diff line number	Diff line change
`@@ -652,7 +652,7 @@ static void clearkeys (global_State g, GCObject l, GCObject *f) {`
`652`	`652`	`Table *h = gco2t(l);`
`653`	`653`	`Node n, limit = gnodelast(h);`
`654`	`654`	`for (n = gnode(h, 0); n < limit; n++) {`
`655`		`- if (!ttisnil(gval(n)) && (iscleared(g, gkey(n)))) {`
	`655`	`+ if (iscleared(g, gkey(n))) {`
`656`	`656`	`setnilvalue(gval(n)); /* remove value ... */`
`657`	`657`	`removeentry(n); /* and remove entry from table */`
`658`	`658`	`}`