#ifndef SSIZE_MAX
# define SSIZE_MAX ((ssize_t) (SIZE_MAX / 2))
#endif
-#if !HAVE_FLOCKFILE
+
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+# define getc_maybe_unlocked(fp) getc(fp)
+#elif !HAVE_FLOCKFILE || !HAVE_FUNLOCKFILE || !HAVE_DECL_GETC_UNLOCKED
# undef flockfile
-# define flockfile(x) ((void) 0)
-#endif
-#if !HAVE_FUNLOCKFILE
# undef funlockfile
+# define flockfile(x) ((void) 0)
# define funlockfile(x) ((void) 0)
+# define getc_maybe_unlocked(fp) getc(fp)
+#else
+# define getc_maybe_unlocked(fp) getc_unlocked(fp)
#endif
/* Read up to (and including) a DELIMITER from FP into *LINEPTR (and
{
int i;
- i = getc (fp);
+ i = getc_maybe_unlocked (fp);
if (i == EOF)
{
result = -1;