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-rw-r--r--tests/ui/tool-attributes/invalid-tool.rs6
1 files changed, 6 insertions, 0 deletions
diff --git a/tests/ui/tool-attributes/invalid-tool.rs b/tests/ui/tool-attributes/invalid-tool.rs
new file mode 100644
index 00000000000..125333231d2
--- /dev/null
+++ b/tests/ui/tool-attributes/invalid-tool.rs
@@ -0,0 +1,6 @@
+#![feature(register_tool)]
+
+#![register_tool(1)]
+//~^ ERROR `register_tool` only accepts identifiers
+
+fn main() {}