diff --git a/src/test/ui/unterminated-comment.rs b/src/test/ui/unterminated-comment.rs
new file mode 100644
index 000000000000..1cfdfb1fb457
--- /dev/null
+++ b/src/test/ui/unterminated-comment.rs
@@ -0,0 +1 @@
+/* //~ ERROR E0758
diff --git a/src/test/ui/unterminated-comment.stderr b/src/test/ui/unterminated-comment.stderr
new file mode 100644
index 000000000000..c513fafeeb35
--- /dev/null
+++ b/src/test/ui/unterminated-comment.stderr
@@ -0,0 +1,9 @@
+error[E0758]: unterminated block comment
+  --> $DIR/unterminated-comment.rs:1:1
+   |
+LL | /*
+   | ^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0758`.
diff --git a/src/test/ui/unterminated-doc-comment.rs b/src/test/ui/unterminated-doc-comment.rs
new file mode 100644
index 000000000000..82546fe73da4
--- /dev/null
+++ b/src/test/ui/unterminated-doc-comment.rs
@@ -0,0 +1 @@
+/*! //~ ERROR E0758
diff --git a/src/test/ui/unterminated-doc-comment.stderr b/src/test/ui/unterminated-doc-comment.stderr
new file mode 100644
index 000000000000..2d5e537973ea
--- /dev/null
+++ b/src/test/ui/unterminated-doc-comment.stderr
@@ -0,0 +1,9 @@
+error[E0758]: unterminated block doc-comment
+  --> $DIR/unterminated-doc-comment.rs:1:1
+   |
+LL | /*!
+   | ^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0758`.