1 files changed, 27 insertions, 0 deletions
diff --git a/unit-tests/cond-op-or.mk b/unit-tests/cond-op-or.mk
new file mode 100644
index 000000000000..696b9dd23062
--- /dev/null
+++ b/unit-tests/cond-op-or.mk
@@ -0,0 +1,27 @@
+# $NetBSD: cond-op-or.mk,v 1.3 2020/08/28 14:48:37 rillig Exp $
+#
+# Tests for the || operator in .if conditions.
+
+.if 0 || 0
+.error
+.endif
+
+.if !(1 || 0)
+.error
+.endif
+
+.if !(0 || 1)
+.error
+.endif
+
+.if !(1 || 1)
+.error
+.endif
+
+# The right-hand side is not evaluated since the left-hand side is already
+# true.
+.if 1 || ${UNDEF}
+.endif
+
+all:
+	@:;