From 415a9a2ea69e917c5af69a484a602010ccf67198 Mon Sep 17 00:00:00 2001
From: Mark Rousskov <mark.simulacrum@gmail.com>
Date: Sat, 2 Oct 2021 12:23:18 -0400
Subject: [PATCH] Add a test that -Zquery-dep-graph -Zdump-dep-graph works

---
 src/test/run-make/dep-graph/Makefile | 12 ++++++++++++
 src/test/run-make/dep-graph/foo.rs   |  1 +
 2 files changed, 13 insertions(+)
 create mode 100644 src/test/run-make/dep-graph/Makefile
 create mode 100644 src/test/run-make/dep-graph/foo.rs

diff --git a/src/test/run-make/dep-graph/Makefile b/src/test/run-make/dep-graph/Makefile
new file mode 100644
index 00000000000..88916022c7c
--- /dev/null
+++ b/src/test/run-make/dep-graph/Makefile
@@ -0,0 +1,12 @@
+-include ../../run-make-fulldeps/tools.mk
+
+# ignore-cross-compile
+
+# Just verify that we successfully run and produce dep graphs when requested.
+
+all:
+	RUST_DEP_GRAPH=$(TMPDIR)/dep-graph $(RUSTC) \
+        -Cincremental=$(TMPDIR)/incr \
+        -Zquery-dep-graph -Zdump-dep-graph foo.rs
+	test -f $(TMPDIR)/dep-graph.txt
+	test -f $(TMPDIR)/dep-graph.dot
diff --git a/src/test/run-make/dep-graph/foo.rs b/src/test/run-make/dep-graph/foo.rs
new file mode 100644
index 00000000000..f328e4d9d04
--- /dev/null
+++ b/src/test/run-make/dep-graph/foo.rs
@@ -0,0 +1 @@
+fn main() {}