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-rw-r--r--posix/unistd.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/posix/unistd.h b/posix/unistd.h
index a86968a8db..476c1f3cbc 100644
--- a/posix/unistd.h
+++ b/posix/unistd.h
@@ -1096,7 +1096,7 @@ extern char *ctermid (char *__s) __THROW;
/* Define some macros helping to catch buffer overflows. */
-#if __USE_FORTIFY_LEVEL > 0 && !defined __cplusplus
+#if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline
# include <bits/unistd.h>
#endif