a potential segfault

CMakeLists.txt

@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
 project(
   athr
-  VERSION 4.0.0
+  VERSION 4.0.1
   LANGUAGES C
 )
 set(PROJECT_DESCRIPTION "Progress indicator library written in C.")

src/athr.c

@@ -111,20 +111,22 @@ void athr_stop(struct athr *at)
 {
     atomic_store(&at->stop, true);
     update(at);
+    thr_join(&at->thr);
+
     if (elapsed_stop(&at->total_elapsed)) error("failed to elapsed_stop");
 
     double seconds = ((double)elapsed_milliseconds(&at->total_elapsed)) / 1000.;
     at->main.super.vtable->finish(&at->main.super, seconds);
     athr_canvas_close(&at->main.canvas);
-    thr_detach(&at->thr);
 }
 
 void athr_stop_wait(struct athr *at)
 {
     atomic_store(&at->stop, true);
     update(at);
-    athr_canvas_close(&at->main.canvas);
     thr_join(&at->thr);
+
+    athr_canvas_close(&at->main.canvas);
 }
 
 void athr_disable_threading(bool disable)

src/athr/athr.h

@@ -27,7 +27,7 @@ extern "C" {
 #define ATHR_TIMESTEP 250
 
 /* Limit on how long to update, in milliseconds. */
-#define ATHR_TIMESTEP_LIMIT 1000
+#define ATHR_TIMESTEP_LIMIT 750
 
 struct athr
 {

src/canvas.c

@@ -65,6 +65,6 @@ void athr_canvas_close(struct athr_canvas *canvas)
     else
     {
         fprintf(stdout, "\n");
-        fflush(stderr);
+        fflush(stdout);
     }
 }