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From: Matt Macy <mmacy@FreeBSD.org>
Date: Tue, 3 Jul 2018 18:39:44 +0000 (UTC)
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Subject: svn commit: r335903 - head/sys/conf
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Author: mmacy
Date: Tue Jul  3 18:39:43 2018
New Revision: 335903
URL: https://svnweb.freebsd.org/changeset/base/335903

Log:
  explain the purpose of genoffset_test

Modified:
  head/sys/conf/kern.post.mk

Modified: head/sys/conf/kern.post.mk
==============================================================================
--- head/sys/conf/kern.post.mk	Tue Jul  3 18:20:42 2018	(r335902)
+++ head/sys/conf/kern.post.mk	Tue Jul  3 18:39:43 2018	(r335903)
@@ -194,6 +194,9 @@ genoffset.o: $S/kern/genoffset.c
 genoffset_test.c: $S/kern/genoffset.c
 	cp $S/kern/genoffset.c genoffset_test.c
 
+# genoffset_test.o is not actually used for anything - the point of compiling it
+# is to exercise the CTASSERT that checks that the offsets in the offset.inc
+# _lite struct(s) match those in the original(s). 
 genoffset_test.o: genoffset_test.c offset.inc
 	${CC} -c ${CFLAGS:N-flto:N-fno-common} -DOFFSET_TEST genoffset_test.c