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-rw-r--r--libc/stdio/stdio.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libc/stdio/stdio.c b/libc/stdio/stdio.c
index f75011aec..8b9b3167c 100644
--- a/libc/stdio/stdio.c
+++ b/libc/stdio/stdio.c
@@ -1039,7 +1039,9 @@ void _flushlbf(void)
* be to change to user locking immediately after opening the stream.
*/
+#ifdef __UCLIBC_MJN3_ONLY__
link_warning(__fsetlocking, "Oddly enough, __fsetlocking() is NOT threadsafe.")
+#endif
int __fsetlocking(FILE *stream, int locking_mode)
{