Add tests to avoid null pointer errors

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11703 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 8 insertions, 6 deletions

diff --git a/test/device.cxx b/test/device.cxx
index 1cb7ec6ab..0246de4d1 100644
--- a/test/device.cxx
+++ b/test/device.cxx
@@ -574,12 +574,14 @@ void copy(Fl_Widget *, void *data) {
     Fl_Image *img = rgb_surf->highres_image();
     delete rgb_surf;
     Fl_Display_Device::display_device()->set_current();
-    Fl_Window* g2 = new Fl_Window(img->w()+10, img->h()+10);
-    g2->color(FL_YELLOW);
-    Fl_Box *b = new Fl_Box(FL_NO_BOX,5,5,img->w(), img->h(),0);
-    b->image(img);
-    g2->end();
-    g2->show();
+    if (img) {
+      Fl_Window* g2 = new Fl_Window(img->w()+10, img->h()+10);
+      g2->color(FL_YELLOW);
+      Fl_Box *b = new Fl_Box(FL_NO_BOX,5,5,img->w(), img->h(),0);
+      b->image(img);
+      g2->end();
+      g2->show();
+    }
     return;
   }