[patch v2] dash fix for job control off warning

[maximilian attems <max@xxxxxxx>]

fix subject and added warning to patch mail,
thanks for review.

----- Forwarded message from "H. Peter Anvin" <hpa@xxxxxxxxx> -----

Date: Mon, 29 Mar 2010 15:07:01 -0700
From: "H. Peter Anvin" <hpa@xxxxxxxxx>
To: maximilian attems <max@xxxxxxx>
Cc: Colin Watson <cjwatson@xxxxxxxxxx>, klibc@xxxxxxxxx,
	Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>,
	Nobuhiro Iwamatsu <iwamatsu@xxxxxxxxxxx>
Subject: Re: [klibc] dash fix for job control off warning

There seems to be a problem with the new version of dash
with job control off.  I can't tell if it is just a warning or is a
manifest bug.

usr/dash/trap.c: In function `exitshell':
usr/dash/trap.c:376: warning: suggest braces around empty body in an `if' statement

The solution is simple:

--- a/usr/dash/jobs.h
+++ b/usr/dash/jobs.h
@@ -105,5 +105,5 @@ int waitforjob(struct job *);
 int stoppedjobs(void);

 #if ! JOBS
-#define setjobctl(on)  /* do nothing */
+#define setjobctl(on) ((void)(on))     /* do nothing */
 #endif

... to keep the code syntactically valid even when setjobctl() is used
as the body of an if statement.

	-hpa

----- End forwarded message -----
-- 
maks

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