Mac OSX Possible bug regarding the sandboxing

[dannyjenn]

I believe this is a bug, but before I go filing the bug report I figured I'd ask here to make sure it's just not me misunderstanding how the sandboxing works.

So the problem is this:

I am writing some code to load data from a bin file and also to save data to a bin file.

I have my load code:

var path = get_open_filename( . . . );
if(path==""){
    show_message("!");
    exit;
}
var file = file_bin_open(path, 0);
var byte = file_bin_read_byte(file);
file_bin_close(file);

And I have my save code:

var path = get_save_filename( . . . );
if(path==""){
    show_message("!");
    exit;
}
var file = file_bin_open(path, 1);
file_bin_write_byte(file, $FF);
file_bin_close(file);

The saving code works fine, exactly as expected.

The loading code works, but only when the file that the user chooses is either:
1.) a file in the working_directory, or
2.) a new file (even if outside the working_directory) which the user made through my game's save feature, this session

The loading code does not work when the player chooses any other file. I get no error message or anything, but my byte variable always loads as 0, even when the first byte in the chosen file is not $00.

My only guess is that this has something to do with the sandboxing. But I thought that get_open_filename() was supposed to bypass the sandboxing? That's why I am thinking that this is a bug and not anything I'm doing wrong. (I am on a Mac, by the way.)

 

[YellowAfterlife]

I'd suggest to try with buffer_ functions instead - I recall that something had been broken about file_bin_ functions but we didn't pinpoint it out on the project because we were migrating to buffers anyway.

 

[dannyjenn]

Ok, I'll give it a shot. Thanks for the suggestion.

 

[IndianaBones]

I have the same problem on the Mac using get_open_filename() to try to load pre-existing sprites from outside of the sandbox. Interesting that you can load files that the user created during the session.

I believe its a bug.

See links below for the forum post and bug report.

Forum Post

Bug Report