Fix leak in optimize processing

This applies a patch from OpenSUSE. Source: https://build.opensuse.org/package/view_file/shells/ksh/ksh93-optimizeleak.dif | Tue Jul 5 14:49:03 CEST 2016 - [email protected] | | - fix leak in optimize processing [bnc#982423] | new patch: ksh93-optimizeleak.dif Unfortunately the bug report is not currently public: https://bugzilla.opensuse.org/show_bug.cgi?id=982423 but this one seems sensible enough and is in production use, so I'll take it on faith.
ksh93 · Jan 27, 2021 · 9b5ff0f · 9b5ff0f
1 parent 6d13526
commit 9b5ff0f
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/cmd/ksh93/sh/name.c b/src/cmd/ksh93/sh/name.c
@@ -2646,6 +2646,13 @@ void nv_optimize(Namval_t *np)
 		}
 		if((xp= (struct optimize*)fp) && xp->ptr==shp->argaddr)
 			return;
+		if(xp && xp->next)
+		{
+			register struct optimize *xpn;
+			for(xpn = xp->next; xpn; xpn = xpn->next)
+				if(xpn->ptr == shp->argaddr && xpn->np == np)
+					return;
+		}
 		if(op = opt_free)
 			opt_free = op->next;
 		else