improve output

stepmania/src/archutils/Unix/CrashHandler.cpp

@@ -339,6 +339,7 @@ static void RunCrashHandler( const CrashData *crash )
 	/* Stop other threads.  XXX: This prints a spurious ptrace error if any threads
 	 * are already suspended, which happens in ForceCrashHandlerDeadlock(). */
 	RageThread::HaltAllThreads();
+fprintf(stderr, "crash\n");
 	
 	/* We need to be very careful, since we're under crash conditions.  Let's fork
 	 * a process and exec ourself to get a clean environment to work in. */

stepmania/src/archutils/Unix/CrashHandlerChild.cpp

@@ -300,7 +300,10 @@ static void child_process()
 	case SIGFPE:
 	case SIGSEGV:
 	case SIGBUS:
-	    reason += ssprintf( " at 0x%08x", (unsigned int) crash.si.si_addr );
+	    if( crash.si.si_code == SI_USER )
+		    reason += ssprintf( " from pid %i", (int) crash.si.si_addr );
+	    else
+		    reason += ssprintf( " at 0x%08x", (unsigned int) crash.si.si_addr );
 	}
 	break;
     }