File: cxx2a_keyword_as_cxx17.cpp

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// RUN: %clang_cc1 %s -verify -fsyntax-only -Wc++2a-compat -std=c++17

#define concept constexpr bool
template<typename T>
concept x = 0;
#undef concept

int concept = 0; // expected-warning {{'concept' is a keyword in C++2a}}
int requires = 0; // expected-warning {{'requires' is a keyword in C++2a}}