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-rw-r--r--lib/replace/replace.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/replace/replace.h b/lib/replace/replace.h
index 8fde16c52d..10c7ee701c 100644
--- a/lib/replace/replace.h
+++ b/lib/replace/replace.h
@@ -756,6 +756,8 @@ char *ufc_crypt(const char *key, const char *salt);
#ifndef HAVE_FDATASYNC
#define fdatasync(fd) fsync(fd)
+#elif !defined(HAVE_DECL_FDATASYNC)
+int fdatasync(int );
#endif
/* these are used to mark symbols as local to a shared lib, or