--- freerdp-3.22.0/winpr/libwinpr/thread/thread.c.old
+++ freerdp-3.22.0/winpr/libwinpr/thread/thread.c
@@ -926,7 +926,11 @@
 	pthread_t tid = pthread_self();
 	/* Since pthread_t can be 64-bits on some systems, take just the    */
 	/* lower 32-bits of it for the thread ID returned by this function. */
+#if defined(__sun)
+	uintptr_t ptid = WINPR_REINTERPRET_CAST(tid, pthread_t, uint_t);
+#else
 	uintptr_t ptid = WINPR_REINTERPRET_CAST(tid, pthread_t, uintptr_t);
+#endif
 	return (ptid & UINT32_MAX) ^ (ptid >> 32);
 #endif
 }