3 files changed, 26 insertions, 0 deletions
diff --git a/tests/run-make/unknown-mod-stdin/Makefile b/tests/run-make/unknown-mod-stdin/Makefile
new file mode 100644
index 000000000..c19317653
--- /dev/null
+++ b/tests/run-make/unknown-mod-stdin/Makefile
@@ -0,0 +1,15 @@
+# ignore-windows
+
+include ../tools.mk
+
+all:
+	echo 'mod unknown;' | $(RUSTC) --crate-type rlib - >$(TMPDIR)/unknown-mod.stdout 2>$(TMPDIR)/unknown-mod.stderr || echo "failed successfully"
+
+# Bless like this: RUSTC_BLESS_TEST=1 ./x.py test tests/run-make/unknown-mod-stdin
+ifdef RUSTC_BLESS_TEST
+	cp "$(TMPDIR)"/unknown-mod.stdout unknown-mod.stdout
+	cp "$(TMPDIR)"/unknown-mod.stderr unknown-mod.stderr
+else
+	$(DIFF) unknown-mod.stdout "$(TMPDIR)"/unknown-mod.stdout
+	$(DIFF) unknown-mod.stderr "$(TMPDIR)"/unknown-mod.stderr
+endif
diff --git a/tests/run-make/unknown-mod-stdin/unknown-mod.stderr b/tests/run-make/unknown-mod-stdin/unknown-mod.stderr
new file mode 100644
index 000000000..d7258fe4f
--- /dev/null
+++ b/tests/run-make/unknown-mod-stdin/unknown-mod.stderr
@@ -0,0 +1,11 @@
+error[E0583]: file not found for module `unknown`
+ --> <anon>:1:1
+  |
+1 | mod unknown;
+  | ^^^^^^^^^^^^
+  |
+  = help: to create the module `unknown`, create file "unknown.rs" or "unknown/mod.rs"
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0583`.
diff --git a/vendor/vcpkg/test-data/no-status/installed/x64-windows/lib/boost_iostreams-vc140-mt.lib b/tests/run-make/unknown-mod-stdin/unknown-mod.stdout
index e69de29bb..e69de29bb 100644
--- a/vendor/vcpkg/test-data/no-status/installed/x64-windows/lib/boost_iostreams-vc140-mt.lib
+++ b/tests/run-make/unknown-mod-stdin/unknown-mod.stdout