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-rw-r--r--man3/unlocked_stdio.32
1 files changed, 1 insertions, 1 deletions
diff --git a/man3/unlocked_stdio.3 b/man3/unlocked_stdio.3
index faab29f06..feed708db 100644
--- a/man3/unlocked_stdio.3
+++ b/man3/unlocked_stdio.3
@@ -23,7 +23,7 @@ Standard C library
.BI "int feof_unlocked(FILE *" stream );
.BI "int ferror_unlocked(FILE *" stream );
.BI "int fileno_unlocked(FILE *" stream );
-.BI "int fflush_unlocked(FILE *" stream );
+.BI "int fflush_unlocked(FILE *_Nullable " stream );
.PP
.BI "int fgetc_unlocked(FILE *" stream );
.BI "int fputc_unlocked(int " c ", FILE *" stream );