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-rw-r--r--winsup/cygwin/include/sys/stdio.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/winsup/cygwin/include/sys/stdio.h b/winsup/cygwin/include/sys/stdio.h
index 8d002ddba..7cc6f09f1 100644
--- a/winsup/cygwin/include/sys/stdio.h
+++ b/winsup/cygwin/include/sys/stdio.h
@@ -28,8 +28,10 @@ details. */
__BEGIN_DECLS
+#ifdef _GNU_SOURCE
ssize_t _EXFUN(getline, (char **, size_t *, FILE *));
ssize_t _EXFUN(getdelim, (char **, size_t *, int, FILE *));
+#endif /* _GNU_SOURCE */
__END_DECLS