diff --git a/srcpkgs/xar/patches/implicit-function-decl.patch b/srcpkgs/xar/patches/implicit-function-decl.patch
new file mode 100644
index 00000000000..83c1a84bc47
--- /dev/null
+++ b/srcpkgs/xar/patches/implicit-function-decl.patch
@@ -0,0 +1,20 @@
+--- a/xar/lib/ext2.c
++++ b/xar/lib/ext2.c
+@@ -41,6 +41,7 @@
+ #include "asprintf.h"
+ #endif
+ #include <stdio.h>
++#include <stdlib.h>
+ #include <unistd.h>
+ #include "xar.h"
+ #include "arcmod.h"
+--- a/xar/lib/linuxattr.c
++++ b/xar/lib/linuxattr.c
+@@ -37,6 +37,7 @@
+ 
+ #include "config.h"
+ #include <stdio.h>
++#include <stdlib.h>
+ #include <unistd.h>
+ #include <libgen.h>
+ #include "xar.h"