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-rw-r--r--libc/include/unistd.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libc/include/unistd.h b/libc/include/unistd.h
index c96f710..99faccc 100644
--- a/libc/include/unistd.h
+++ b/libc/include/unistd.h
@@ -32,6 +32,8 @@ extern char* crypt __P((__const char *__key, __const char *__salt));
#define F_OK 0 /* Test for existence. */
#endif
+#define _POSIX_VDISABLE '\0'
+
#endif /* __UNISTD_H */