abort() message now includes the process ID

photon/libc/stdlib/abort.c

@@ -1,8 +1,9 @@
 #include <stdlib.h>
+#include <unistd.h>
 #include <stdio.h>
 
 _Noreturn void abort(void)
 {
-    fprintf(stderr, "Aborted.\n");
+    fprintf(stderr, " ** [%d] abort\n", getpid());
     exit(-1);
 }