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-rw-r--r--hurd/intr-msg.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hurd/intr-msg.c b/hurd/intr-msg.c
index cdcd8d51ea..6f670b538f 100644
--- a/hurd/intr-msg.c
+++ b/hurd/intr-msg.c
@@ -66,7 +66,7 @@ _hurd_intr_rpc_mach_msg (mach_msg_header_t *msg,
 	 "				movl $-25, %%eax\n"
 	 "_hurd_intr_rpc_msg_do_trap:	lcall $7, $0 # status in %0\n"
 	 "_hurd_intr_rpc_msg_in_trap:	movl %%ecx, %%esp"
-	 : "=a" (err) : "m" ((&msg)[1]) : "%ecx");
+	 : "=a" (err) : "m" ((&msg)[-1]) : "%ecx");
 
   switch (err)
     {