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-rw-r--r--lib/libutil/libutil.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/libutil/libutil.h b/lib/libutil/libutil.h
index 17e4f1fba247..679a213e64bf 100644
--- a/lib/libutil/libutil.h
+++ b/lib/libutil/libutil.h
@@ -151,7 +151,7 @@ int uu_lock_txfr(const char *_ttyname, pid_t _pid);
* Conditionally prototype the following functions if the include
* files upon which they depend have been included.
*/
-#ifdef _STDIO_H_
+#ifdef __STDC_VERSION_STDIO_H__
char *fparseln(FILE *_fp, size_t *_len, size_t *_lineno,
const char _delim[3], int _flags);
#endif