@ -351,7 +351,7 @@ typedef CELL Term;
#if !defined(YAPOR) && !defined(THREADS)
#include <nolocks.h>
#elif USE_PTHREAD_LOCKING || defined(__APPLE__) || defined(__CYGWIN__)
#elif USE_PTHREAD_LOCKING || defined(__CYGWIN__)
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE 600
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