From 1a6266340e53e3f663b49f71a14461dafa47de47 Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Tue, 25 Mar 2025 10:51:42 +1100
Subject: [PATCH] Add a test with an empty crate name.

This error was untested.
---
 tests/ui/attributes/crate-name-empty.rs     | 5 +++++
 tests/ui/attributes/crate-name-empty.stderr | 8 ++++++++
 2 files changed, 13 insertions(+)
 create mode 100644 tests/ui/attributes/crate-name-empty.rs
 create mode 100644 tests/ui/attributes/crate-name-empty.stderr

diff --git a/tests/ui/attributes/crate-name-empty.rs b/tests/ui/attributes/crate-name-empty.rs
new file mode 100644
index 00000000000..dfba77a52de
--- /dev/null
+++ b/tests/ui/attributes/crate-name-empty.rs
@@ -0,0 +1,5 @@
+// Ensure we reject `#![crate_name = ""]`.
+
+#![crate_name = ""] //~ ERROR crate name must not be empty
+
+fn main() {}
diff --git a/tests/ui/attributes/crate-name-empty.stderr b/tests/ui/attributes/crate-name-empty.stderr
new file mode 100644
index 00000000000..509a42d05f7
--- /dev/null
+++ b/tests/ui/attributes/crate-name-empty.stderr
@@ -0,0 +1,8 @@
+error: crate name must not be empty
+  --> $DIR/crate-name-empty.rs:3:1
+   |
+LL | #![crate_name = ""]
+   | ^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to 1 previous error
+