--- /dev/null
+#![warn(clippy::upper_case_acronyms)]
+
+struct HTTPResponse; // not linted by default, but with cfg option
+
+struct CString; // not linted
+
+enum Flags {
+ NS, // not linted
+ CWR,
+ ECE,
+ URG,
+ ACK,
+ PSH,
+ RST,
+ SYN,
+ FIN,
+}
+
+// linted with cfg option, beware that lint suggests `GccllvmSomething` instead of
+// `GccLlvmSomething`
+struct GCCLLVMSomething;
+
+fn main() {}