$ clang -x c -
int f(X x);
<stdin>:1:7: error: unknown type name 'X'
int f(X x);
^ $ clang -x c -
int f(X x);
<stdin>:1:7: error: unknown type name 'X'
int f(X x);
^http://blog.llvm.org/2011/05/c-at-google-here-be-dragons.htm...