// Written by Johannes Singler.
-#ifndef _GLIBCXX_PARALLEL_CHECKERS
-#define _GLIBCXX_PARALLEL_CHECKERS 1
+#ifndef _GLIBCXX_PARALLEL_CHECKERS_H
+#define _GLIBCXX_PARALLEL_CHECKERS_H 1
#include <functional>
#include <cstdio>
}
}
-#endif
+#endif /* _GLIBCXX_PARALLEL_CHECKERS_H */