From: Eugene Syromyatnikov <evgsyr@gmail.com>
Date: Sat, 7 Apr 2018 02:08:44 +0000 (+0200)
Subject: ipc_msg: sign extend msgtyp in m32 personality
X-Git-Tag: v4.23~362
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=9574a6e231e0991a6f6fb965eb4e5e8ebcc7284f;p=strace

ipc_msg: sign extend msgtyp in m32 personality

msgtyp has to be treated as a signed type all the way from fetching
to printing.

* ipc_msg.c (fetch_msgrcv_args): Sign extend msgtyp when fetching.
---

diff --git a/ipc_msg.c b/ipc_msg.c
index dc898a82..6578bdff 100644
--- a/ipc_msg.c
+++ b/ipc_msg.c
@@ -99,7 +99,7 @@ fetch_msgrcv_args(struct tcb *const tcp, const kernel_ulong_t addr,
 		if (umove_or_printaddr(tcp, addr, &tmp))
 			return -1;
 		pair[0] = tmp[0];
-		pair[1] = tmp[1];
+		pair[1] = (int) tmp[1];
 	}
 	return 0;
 }