Add test for empty doc comments with a backline

1 files changed, 22 insertions, 0 deletions

diff --git a/src/test/rustdoc/empty-doc-comment.rs b/src/test/rustdoc/empty-doc-comment.rs
new file mode 100644
index 00000000000..b1dae930e06
--- /dev/null
+++ b/src/test/rustdoc/empty-doc-comment.rs
@@ -0,0 +1,22 @@
+// Ensure that empty doc comments don't panic.
+
+/*!
+*/
+
+///
+///
+pub struct Foo;
+
+#[doc = "
+"]
+pub mod Mod {
+   //!
+   //!
+}
+
+/**
+*/
+pub mod Another {
+   #![doc = "
+"]
+}