Index: filed.c
==================================================================
--- filed.c
+++ filed.c
@@ -488,11 +488,11 @@
 					);
 
 					break;
 			}
 			fprintf(fp, " THREAD=%llu TIME=%llu\n",
-				(unsigned long long) curr->thread,
+				(unsigned long long) ((intptr_t) curr->thread),
 				(unsigned long long) now
 			);
 			fflush(fp);
 
 			prev = curr;