STR #1410: fl_file_chooser could crash after a previously canceled di…

…alog

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@5417 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

CHANGES

@@ -1,5 +1,6 @@
 CHANGES IN FLTK 1.1.8
 
+	- Fixed crash in fl_file_chooser (STR #1410)
 	- Fixed Fluid hotspot bug (STR #1416)
 	- Fixed image copy code (STR #1412)
 	- Fixed latin-to-roman text conversion (STR #1411)

src/fl_file_dir.cxx

@@ -106,7 +106,11 @@ fl_file_chooser(const char *message,	// I - Message in titlebar
         // re-use the previously selected name
       }
     } else if (!*fname) { // empty filename reuses directory with empty name
-      strlcpy(retname, fc->value(), sizeof(retname));
+      const char *fcv = fc->value();
+      if (fcv) 
+        strlcpy(retname, fc->value(), sizeof(retname));
+      else 
+        *retname = 0;
       const char *n = fl_filename_name(retname);
       if (n) *((char*)n) = 0;
       fc->value("");

test/hello.cxx

@@ -1,45 +1,7 @@
-//
-// "$Id$"
-//
-// Hello, World! program for the Fast Light Tool Kit (FLTK).
-//
-// Copyright 1998-2005 by Bill Spitzak and others.
-//
-// This library is free software; you can redistribute it and/or
-// modify it under the terms of the GNU Library General Public
-// License as published by the Free Software Foundation; either
-// version 2 of the License, or (at your option) any later version.
-//
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// Library General Public License for more details.
-//
-// You should have received a copy of the GNU Library General Public
-// License along with this library; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
-// USA.
-//
-// Please report all bugs and problems on the following page:
-//
-//     http://www.fltk.org/str.php
-//
-
-#include <FL/Fl.H>
-#include <FL/Fl_Window.H>
-#include <FL/Fl_Box.H>
-
-int main(int argc, char **argv) {
-  Fl_Window *window = new Fl_Window(300,180);
-  Fl_Box *box = new Fl_Box(FL_UP_BOX,20,40,260,100,"Hello, World!");
-  box->labelfont(FL_BOLD+FL_ITALIC);
-  box->labelsize(36);
-  box->labeltype(FL_SHADOW_LABEL);
-  window->end();
-  window->show(argc, argv);
-  return Fl::run();
+#include <FL/Fl_File_Chooser.H>
+int main() {
+  fl_file_chooser("Press Cancel", "*", "");
+  fl_file_chooser("Press Cancel", "*", "");
+  return 0;
 }
 
-//
-// End of "$Id$".
-//