From 834ec68821b0d911d1ba095518bc7763236216dc Mon Sep 17 00:00:00 2001
From: Eric Huss <eric@huss.org>
Date: Wed, 26 May 2021 17:44:03 -0700
Subject: [PATCH] Add test to check behavior when incremental session init
 fails.

---
 .../run-make/incremental-session-fail/Makefile    | 15 +++++++++++++++
 src/test/run-make/incremental-session-fail/foo.rs |  1 +
 2 files changed, 16 insertions(+)
 create mode 100644 src/test/run-make/incremental-session-fail/Makefile
 create mode 100644 src/test/run-make/incremental-session-fail/foo.rs

diff --git a/src/test/run-make/incremental-session-fail/Makefile b/src/test/run-make/incremental-session-fail/Makefile
new file mode 100644
index 00000000000..208a1b13a6d
--- /dev/null
+++ b/src/test/run-make/incremental-session-fail/Makefile
@@ -0,0 +1,15 @@
+include ../../run-make-fulldeps/tools.mk
+
+SESSION_DIR := $(TMPDIR)/session
+OUTPUT_FILE := $(TMPDIR)/build-output
+
+all:
+	echo $(TMPDIR)
+	mkdir $(SESSION_DIR)
+	# Make it so that rustc will fail to create a session directory.
+	chmod a-w $(SESSION_DIR)
+	# Check exit code is 1 for an error, and not 101 for ICE.
+	$(RUSTC) foo.rs --crate-type=rlib -C incremental=$(SESSION_DIR) > $(OUTPUT_FILE) 2>&1; [ $$? -eq 1 ]
+	$(CGREP) "Could not create incremental compilation crate directory" < $(OUTPUT_FILE)
+	# -v tests are fragile, hopefully this text won't change
+	$(CGREP) -v "internal compiler error" < $(OUTPUT_FILE)
diff --git a/src/test/run-make/incremental-session-fail/foo.rs b/src/test/run-make/incremental-session-fail/foo.rs
new file mode 100644
index 00000000000..d11c69f812a
--- /dev/null
+++ b/src/test/run-make/incremental-session-fail/foo.rs
@@ -0,0 +1 @@
+// intentionally empty