(Fix): replaced hardcoded C.__uint32_t / C.__int32_t casts with a C helper function (auth/utmpx_time.h) that lets the compiler handle type conversion.

src/auth/utmpx.go

@@ -6,8 +6,10 @@ package auth
 /*
 #include <utmpx.h>
 #include <string.h>
-#include <sys/time.h>
 #include <stdlib.h>
+#include <stdint.h>
+
+#include "utmpx_time.h"
 */
 import "C"
 import (
@@ -49,8 +51,7 @@ func AddUtmpx(user string, tty uint8, pid uint32) *UtmpxSession {
 	ut.ut_id[0] = C.char(ttyCh)
 
 	us := time.Now().UnixMicro()
-	ut.ut_tv.tv_sec = C.__uint32_t(us / 1_000_000)
-	ut.ut_tv.tv_usec = C.__int32_t(us % 1_000_000)
+	C.latchd_set_utmpx_time(&ut, C.int64_t(us/1_000_000), C.int32_t(us%1_000_000))
 
 	C.setutxent()
 	C.pututxline(&ut)

src/auth/utmpx_time.h

@@ -0,0 +1,9 @@
+// Helper: assign seconds + microseconds to utmpx's ut_tv field.
+// The C compiler handles the type conversion, so this works whether
+// ut_tv is struct timeval (long tv_sec/tv_usec) or the compat struct
+// (__uint32_t tv_sec / __int32_t tv_usec).
+
+static inline void latchd_set_utmpx_time(struct utmpx *ut, int64_t sec, int32_t usec) {
+	ut->ut_tv.tv_sec  = sec;
+	ut->ut_tv.tv_usec = usec;
+}