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+The `C-cmse-nonsecure-call` ABI can only be used with function pointers.
+
+Erroneous code example:
+
+```compile_fail,E0781
+#![feature(abi_c_cmse_nonsecure_call)]
+
+pub extern "C-cmse-nonsecure-call" fn test() {}
+```
+
+The `C-cmse-nonsecure-call` ABI should be used by casting function pointers to
+specific addresses.