2 files changed, 30 insertions, 0 deletions
diff --git a/src/test/ui/obsolete-in-place/bad.rs b/src/test/ui/obsolete-in-place/bad.rs
new file mode 100644
index 000000000..a491bb21a
--- /dev/null
+++ b/src/test/ui/obsolete-in-place/bad.rs
@@ -0,0 +1,11 @@
+// Check that `<-` and `in` syntax gets a hard error.
+
+fn foo() {
+    let (x, y) = (0, 0);
+    x <- y; //~ ERROR unexpected token: `<-`
+}
+
+fn main() {
+    let (foo, bar) = (0, 0);
+    in(foo) { bar }; //~ ERROR expected expression, found keyword `in`
+}
diff --git a/src/test/ui/obsolete-in-place/bad.stderr b/src/test/ui/obsolete-in-place/bad.stderr
new file mode 100644
index 000000000..363dfb776
--- /dev/null
+++ b/src/test/ui/obsolete-in-place/bad.stderr
@@ -0,0 +1,19 @@
+error: unexpected token: `<-`
+  --> $DIR/bad.rs:5:7
+   |
+LL |     x <- y;
+   |       ^^
+   |
+help: if you meant to write a comparison against a negative value, add a space in between `<` and `-`
+   |
+LL |     x < - y;
+   |       ~~~
+
+error: expected expression, found keyword `in`
+  --> $DIR/bad.rs:10:5
+   |
+LL |     in(foo) { bar };
+   |     ^^ expected expression
+
+error: aborting due to 2 previous errors
+