Thread: gtk+ structure member problem

hello,

having trouble setting gchar *filename gchar *file_name gchar *file_name member of structure fileinfo , struct fileinfo nested struct of publicdata. here code:

code:

structure window.h    typedef struct  {  	gboolean file_flag;  	gchar *file_name;  }fileinfo;    signals.c    void save_file_as(gtkbutton *save, mainwin *mw, fileinfo *fi)  {  	gtkwidget *dialog;  	gtktextiter start, end;  	gchar *filename, *content;  	gint result;  	  	dialog = gtk_file_chooser_dialog_new("save as...", null,  							gtk_file_chooser_action_save, gtk_stock_ok,  							gtk_response_accept, gtk_stock_cancel,  							gtk_response_cancel, null);  	  	result = gtk_dialog_run(gtk_dialog(dialog));  	  	if(result == gtk_response_accept)  	{  		filename = gtk_file_chooser_get_filename(gtk_file_chooser(dialog));  		gtk_text_buffer_get_bounds(mw->buffer, &start, &end);  		content = gtk_text_buffer_get_text(mw->buffer, &start, &end, false);  		g_file_set_contents(filename, content, -1, null);  		fi->file_flag = true;  		fi->file_name = filename;  		g_free(filename);  		g_free(content);  	}  		  	gtk_widget_destroy(dialog);  }

here output when hit save button.

code:

(codepad2:10842): glib-gobject-critical **: g_object_unref: assertion `g_is_object (object)' failed    (codepad2:10842): glib-gobject-critical **: g_object_ref: assertion `g_is_object (object)' failed    (codepad2:10842): glib-gobject-critical **: g_object_unref: assertion `g_is_object (object)' failed    (codepad2:10842): glib-gobject-critical **: g_object_get_qdata: assertion `g_is_object (object)' failed  segmentation fault

if print filename screen, path file. have fi->file_name set null. when try print fi->file_name screen, segmentation fault. not sure going on fi->file_name.

code:

fi->file_name = filename;  g_free(filename);

here copy filename pointer fi->file_name pointer , deleting content filename (and fi->file_name) points to.
result both pointers invalid.
next thing tries dereference fi->file_name or filename produce segfault

use g_strdup allocate copy of filename , assign fi->file_name
(or don't free filename in first place if thats ok in application)

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