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+An invalid lint attribute has been given.
+
+Erroneous code example:
+
+```compile_fail,E0452
+#![allow(foo = "")] // error: malformed lint attribute
+```
+
+Lint attributes only accept a list of identifiers (where each identifier is a
+lint name). Ensure the attribute is of this form:
+
+```
+#![allow(foo)] // ok!
+// or:
+#![allow(foo, foo2)] // ok!
+```