1 files changed, 31 insertions, 0 deletions
diff --git a/contrib/bmake/unit-tests/suff-incomplete.mk b/contrib/bmake/unit-tests/suff-incomplete.mk
new file mode 100644
index 000000000000..474c7aaab664
--- /dev/null
+++ b/contrib/bmake/unit-tests/suff-incomplete.mk
@@ -0,0 +1,31 @@
+# $NetBSD: suff-incomplete.mk,v 1.2 2020/11/22 11:05:49 rillig Exp $
+#
+# Tests incomplete transformation rules, which are ignored.
+
+all: suff-incomplete.c
+
+.MAKEFLAGS: -dps
+
+.SUFFIXES:
+
+.SUFFIXES: .a .b .c
+
+# This rule has no commands and no dependencies, therefore it is incomplete
+# and not added to the transformation rules.
+#
+# See Suff_EndTransform.
+.a.b:
+
+# This rule has a dependency, therefore it is a complete transformation.
+# Its commands are taken from a .DEFAULT target, if there is any.
+.a.c: ${.PREFIX}.dependency
+
+.DEFAULT:
+	: Making ${.TARGET} from ${.IMPSRC} all ${.ALLSRC} by default.
+
+# The debug log says "transformation .DEFAULT complete", which seems wrong
+# on the first sight.  It is intentionally done though, in the call to
+# GNode_New(".DEFAULT").
+
+# XXX: The output of this test says "Making suff-incomplete.c from
+# suff-incomplete.c".  It doesn't make sense to make something out of itself.