Problem with seek, Crash Options

[grimes]

I want to seek ahead by 20 sec.

So i made following code:

service_ptr_t<file> file_io;
abort_callback_dummy abort;
file_io->seek_ex(3528000,file::seek_from_current,abort);

and put it in mainmenu_command's execute method.

Unfortunately this code crashes foobar2000.

What's wrong?

[fbuser]

I want to seek ahead by 20 sec.

I guess, you want to seek ahead during playback. You need to use static_api_ptr_t<playback_control>()->playback_seek(20) for this purpose. Seeking in a file will not do, what you want.

Unfortunately this code crashes foobar2000.

That is really no suprise. You are using an uninitialised pointer: service_ptr_t<file> file_io

[Zao]

fbuser's assessment is correct, but I'd like to add some further comments.
When programming, do make an effort to understand the platform you're working with instead of writing syntactically correct but semantically nonsensical code. Do not code by coincidence.

Also, there's no such thing as "it just crashed". If you got an access violation, you have at a minimum the address it occured with, which in your case most probably was around null.
Your code is the smart pointer version of T* p = 0; p->lol(); No matter what T is, you'll blow up.