1 files changed, 25 insertions, 0 deletions
diff --git a/unit-tests/directive-if-nested.mk b/unit-tests/directive-if-nested.mk
new file mode 100644
index 000000000000..19c8e9452660
--- /dev/null
+++ b/unit-tests/directive-if-nested.mk
@@ -0,0 +1,25 @@
+# $NetBSD: directive-if-nested.mk,v 1.1 2020/11/10 22:23:37 rillig Exp $
+#
+# Tests for deeply nested .if directives.  By default, memory for 128 nested
+# .if directives is pre-allocated, any deeper nesting is reallocated.
+#
+# See also:
+#	Cond_EvalLine
+
+GEN=	directive-if-nested.inc
+
+all: set-up test tear-down
+
+set-up: .PHONY
+	@{ printf '.if %s\n' ${:U:range=1000};				\
+	   printf '.info deeply nested .if directives\n';		\
+	   printf '.endif # %s\n' ${:U:range=1000};			\
+	   printf '\n';							\
+	   printf 'all:\n';						\
+	} > ${GEN}
+
+test: .PHONY
+	@${MAKE} -f ${GEN}
+
+tear-down: .PHONY
+	@rm -f ${GEN}