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-rw-r--r--perlsdio.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/perlsdio.h b/perlsdio.h
index efc52e1cd4..46a15de9fa 100644
--- a/perlsdio.h
+++ b/perlsdio.h
@@ -79,7 +79,11 @@
#ifdef HAS_SETLINEBUF
#define PerlIO_setlinebuf(f) setlinebuf(f);
#else
-#define PerlIO_setlinebuf(f) setvbuf(f, Nullch, _IOLBF, 0);
+# ifdef CYGWIN
+# define PerlIO_setlinebuf(f)
+# else
+# define PerlIO_setlinebuf(f) setvbuf(f, Nullch, _IOLBF, 0);
+# endif
#endif
/* Now our interface to Configure's FILE_xxx macros */