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From: John Birrell <jb@FreeBSD.org>
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Subject: PERFORCE change 100914 for review
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http://perforce.freebsd.org/chv.cgi?CH=100914

Change 100914 by jb@jb_freebsd2 on 2006/07/07 18:48:50

	On sparc64 gcc is sign-extending the value passed to dt_ioctl
	despite the fact that it's declared as long and the _IOC macro
	is typed as unsigned long.

Affected files ...

.. //depot/projects/dtrace/src/contrib/opensolaris/lib/libdtrace/common/dt_subr.c#9 edit

Differences ...

==== //depot/projects/dtrace/src/contrib/opensolaris/lib/libdtrace/common/dt_subr.c#9 (text) ====

@@ -471,10 +471,19 @@
 }
 
 int
+#if defined(sun)
 dt_ioctl(dtrace_hdl_t *dtp, int val, void *arg)
+#else
+dt_ioctl(dtrace_hdl_t *dtp, u_long val, void *arg)
+#endif
 {
 	const dtrace_vector_t *v = dtp->dt_vector;
 
+#if !defined(sun)
+	/* XXX Avoid sign extension. This shouldn't be necessary. */
+	val &= 0xffffffff;
+#endif
+
 	if (v != NULL)
 		return (v->dtv_ioctl(dtp->dt_varg, val, arg));