From 11b1d483b2f0e65e049c491c34a0f8573553f4b4 Mon Sep 17 00:00:00 2001
From: varkor <github@varkor.com>
Date: Tue, 30 Apr 2019 21:52:54 +0100
Subject: [PATCH] Add a run-make test for command aliases

---
 .../run-make/override-aliased-flags/Makefile  | 22 +++++++++++++++++++
 .../run-make/override-aliased-flags/main.rs   |  1 +
 2 files changed, 23 insertions(+)
 create mode 100644 src/test/run-make/override-aliased-flags/Makefile
 create mode 100644 src/test/run-make/override-aliased-flags/main.rs

diff --git a/src/test/run-make/override-aliased-flags/Makefile b/src/test/run-make/override-aliased-flags/Makefile
new file mode 100644
index 00000000000..866060ad998
--- /dev/null
+++ b/src/test/run-make/override-aliased-flags/Makefile
@@ -0,0 +1,22 @@
+-include ../../run-make-fulldeps/tools.mk
+
+# FIXME: it would be good to check that it's actually the rightmost flags
+# that are used when multiple flags are specified, but I can't think of a
+# reliable way to check this.
+
+all:
+	# Test that `-O` and `-C opt-level` can be specified multiple times.
+	# The rightmost flag will be used over any previous flags.
+	$(RUSTC) -O -O main.rs
+	$(RUSTC) -O -C opt-level=0 main.rs
+	$(RUSTC) -C opt-level=0 -O main.rs
+	$(RUSTC) -C opt-level=0 -C opt-level=2 main.rs
+	$(RUSTC) -C opt-level=2 -C opt-level=0 main.rs
+
+	# Test that `-g` and `-C debuginfo` can be specified multiple times.
+	# The rightmost flag will be used over any previous flags.
+	$(RUSTC) -g -g main.rs
+	$(RUSTC) -g -C debuginfo=0 main.rs
+	$(RUSTC) -C debuginfo=0 -g main.rs
+	$(RUSTC) -C debuginfo=0 -C debuginfo=2 main.rs
+	$(RUSTC) -C debuginfo=2 -C debuginfo=0 main.rs
diff --git a/src/test/run-make/override-aliased-flags/main.rs b/src/test/run-make/override-aliased-flags/main.rs
new file mode 100644
index 00000000000..f328e4d9d04
--- /dev/null
+++ b/src/test/run-make/override-aliased-flags/main.rs
@@ -0,0 +1 @@
+fn main() {}