DSI Error on exit

Hi! I'm writing a tool with mui and ahi.
When i close the program, workbench gives me a DSI (Data Storage Interrupt) Error.
What is this?
Thx!!

The programm try to read/write to an illegal( not allocated) adress. Maybe you have freed memory and try to access this memory.

Check out the Using Crash-Logs for Debugging article on the AmigaOS Documentation Wiki.

@ssolie. Interesting read. Thanks. How is the automated bug tracking system progressing?

thk you all!!! :)

Correct if i'm wrong: i solved this commenting "dropinterface".
Well, could it be related to the "-lauto" switch I use in gcc, thus Os automatically provides to close libraries, drop interfaces and so on?
Thk you!

Quote:

The -lauto switch does provide open and closing functions for many of the standard system libraries. You *can* mix your own open library / interface calls with the lauto ones as the lauto code is only brought in if the library and interface are not explictly declared in the code.

You need to be consistant though, only close and drop interfaces that you have explictly opened yourself.

Which dropinterface call was crashing? Was your code crashing inside libauto.a or at your own dropintrface call?

Maybe you dropped the same interface twice?
It's a good idea to set an pointer to NULL after freeing the resource it points to.

eg

IExec->DropInterface(myinterface);
myinterface = NULL;

Quote:

"A good idea"?? IMHO it should be "programming rule"

Quote:
I really don't recommend using the "-lauto" feature. Instead, consider always explicitly controlling the resources you need in your programs.

Take a look at AmiWest Lesson 2: Fundamentals where there is some guidance and help to simplify this task.

You don't need to keep track of both the Interface and the Library base pointer because every Interface contains a pointer back to the Library base pointer.