1 files changed, 50 insertions, 0 deletions
diff --git a/contrib/bmake/unit-tests/suff-use.mk b/contrib/bmake/unit-tests/suff-use.mk
new file mode 100644
index 000000000000..b648545e1f5c
--- /dev/null
+++ b/contrib/bmake/unit-tests/suff-use.mk
@@ -0,0 +1,50 @@
+# $NetBSD: suff-use.mk,v 1.2 2022/02/09 21:09:24 rillig Exp $
+#
+# This test combines a .USE node with suffix rules, trying to add an
+# additional command before and after successful compilation of a .c file.
+#
+# History:
+#	make-2001.11.12.21.58.18
+#	| : 'Making demo.c out of nothing'
+#	| make: don't know how to make demo.o. Stop
+#	|
+#	| make: stopped in <curdir>
+#	| exit status 2
+#	make-2007.10.11.21.19.28
+#
+#	make-2014.08.23.15.05.40
+#	| : 'Making demo.c out of nothing'
+#	| : 'Compiling demo.c to demo.o'
+#	| exit status 0
+#	make-2014.09.05.06.57.20
+#
+#	make-2014.09.07.20.55.34
+#	| : 'Making demo.c out of nothing'
+#	| make: don't know how to make demo.o. Stop
+#	|
+#	| make: stopped in <curdir>
+#	| exit status 2
+#	...
+#
+# See also:
+#	https://gnats.netbsd.org/20993
+
+
+.SUFFIXES: .c .o
+
+all: demo.o
+
+.c.o:
+	: 'Compiling ${.IMPSRC} to ${.TARGET}'
+
+demo.c:
+	: 'Making ${.TARGET} out of nothing'
+
+using-before: .USEBEFORE
+	: 'Before making ${.TARGET} from ${.ALLSRCS}'
+
+using-after: .USE
+	: 'After making ${.TARGET} from ${.ALLSRCS}'
+
+# expect: make: don't know how to make demo.o (continuing)
+.c.o: using-before using-after