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no-warn-user-defined-literals-in-system-headers.cpp
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -Wsystem-headers -isystem %S %s

#include <no-warn-user-defined-literals-in-system-headers.h>

void operator "" bar(long double); // expected-warning{{user-defined literal suffixes not starting with '_' are reserved}}