Normally glibc does not buffer tty output, but a devstream backed by the Mach console device cannot be isatty'ed. So we need to ask glibc explicitly to not buffer it. This is what the startup and mach-defpager do already. --- proc/main.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/proc/main.c b/proc/main.c index 8a2dc9ff..747646ef 100644 --- a/proc/main.c +++ b/proc/main.c @@ -132,6 +132,7 @@ open_console (mach_port_t device_master) stdin = mach_open_devstream (cons, "r"); stdout = stderr = mach_open_devstream (cons, "w"); + setbuf (stdout, NULL); got_console = 1; mach_port_deallocate (mach_task_self (), cons); -- 2.40.1
