# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1663260696 -7200
# Node ID be0b22f08a85b301d828dcd1b8fa03881f4a8bc5
# Parent  b8237fb9bbd9596a5c5e0da416e7a3faa0eb6232
Isolate variable argument size metadata more robustly.

diff -r b8237fb9bbd9 -r be0b22f08a85 libsystypes/include/systypes/factory.h
--- a/libsystypes/include/systypes/factory.h	Thu Sep 15 18:50:13 2022 +0200
+++ b/libsystypes/include/systypes/factory.h	Thu Sep 15 18:51:36 2022 +0200
@@ -40,7 +40,7 @@
 
 /* Tag inspection macros. */
 
-#define ipc_varg_size(tag) (tag >> 16)
+#define ipc_varg_size(tag) ((tag >> 16) & 0xff)
 
 #define ipc_varg_type(tag) (tag & 0xff)