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// RUN: %check_clang_tidy -expect-clang-tidy-error %s misc-unused-using-decls %t
namespace n {
class C;
}
using n::C;
void f() {
for (C *p : unknown()) {}
// CHECK-MESSAGES: :[[@LINE-1]]:15: error: use of undeclared identifier 'unknown' [clang-diagnostic-error]
}