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- /*
- * Copyright Andrey Semashev 2017.
- * Distributed under the Boost Software License, Version 1.0.
- * (See accompanying file LICENSE_1_0.txt or copy at
- * http://www.boost.org/LICENSE_1_0.txt)
- */
- // Test if we can include system headers with -D_XOPEN_SOURCE=600
- #undef _XOPEN_SOURCE
- #define _XOPEN_SOURCE 600
- #include <unistd.h>
- int main(int, char*[])
- {
- return 0;
- }
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