From: Ondrej Zajicek <santiago@crfreenet.org>
Date: Thu, 2 Jul 2026 15:21:50 +0000 (+0200)
Subject: Filter: Fix zero arg handling
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=59f7b7fb6cf2aa0cbe3640db340c2dd37d36bdca;p=thirdparty%2Fbird.git

Filter: Fix zero arg handling

memcpy() should not have NULL src arg

Reported-By: lzx0xf1@gmail.com
Target: patch
---

diff --git a/filter/filter.c b/filter/filter.c
index f17de58c2..1c9b5dbcf 100644
--- a/filter/filter.c
+++ b/filter/filter.c
@@ -170,7 +170,7 @@ interpret(struct filter_state *fs, const struct f_line *line, uint argc, const s
 
   /* Set the arguments and top-level variables */
   fstk->vcnt = line->vars + line->args;
-  memcpy(fstk->vstk, argv, sizeof(struct f_val) * line->args);
+  bmemcpy(fstk->vstk, argv, sizeof(struct f_val) * line->args);
   memset(fstk->vstk + line->args, 0, sizeof(struct f_val) * line->vars);
 
   /* The same as with the value stack. Not resetting the stack completely for performance reasons. */