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-rw-r--r--include/bits/stdio.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/include/bits/stdio.h b/include/bits/stdio.h
index 0afd8b40..b4611f3f 100644
--- a/include/bits/stdio.h
+++ b/include/bits/stdio.h
@@ -5,6 +5,13 @@
#define TMP_MAX 10000
#define L_cuserid 20
-#define L_ctermid 20
#define L_tmpnam 20
+
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
+#define L_ctermid 20
+#endif
+
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
#define P_tmpdir "/tmp"
+#endif