more comment

1 files changed, 2 insertions, 0 deletions

diff --git a/mycan.c b/mycan.c
index e7202d5..e8f4157 100644
--- a/mycan.c
+++ b/mycan.c
@@ -113,6 +113,8 @@ int main(int argc, char **argv)
 			break;
 	}
 	// need fflush for systemd to log my stdout
+	// without fflush, fprintf stderr works, printf not work, fprintf stdout not work
+	// maybe other ways to disable buffering also works
 	// https://unix.stackexchange.com/questions/725331
 	// https://unix.stackexchange.com/questions/785686
 	fflush(stdout);