c++ exceptions causing abort
c++ exceptions causing abort
- Subject: c++ exceptions causing abort
- From: Benjohn <email@hidden>
- Date: Mon, 13 Dec 2004 16:09:29 +0000
Our application uses some cross platform c++ code that can throw c++
exceptions. We would like to catch otherwise unhandled c++ exceptions
close to the main event loop, and display a suitable error dialogue.
This seems like it should be reasonably easy to do by using a custom
NSApplication that replaces some methods with calls to the super
object wrapped in a try catch block.
Having tried this though, it doesn't work. We have found that if a c++
throw and its catch are separated by App Kit or Foundation functions,
the catch handler isn't called, and instead the program aborts.
ie:
Our c++ code - throw occurs here.
Our c++ code
Our c++ code
App Kit / Foundation
App Kit / Foundation
App Kit / Foundation
App Kit / Foundation
Our handler - catch here doesn't work.
App Kit / Foundation
App Kit / Foundation
Root of the stack
We have a small project that will reproduce this.
We're getting a bit desperate for a solution or explanation, and have
failed to find any leads. I wouldn't be surprised if we had some
compiler flags set wrong, but we've not found anything that makes a
difference.
Please could someone tell me if this is not possible (c++ exceptions
can't be thrown through app kit / foundation methods, for eg).
Alternatively, could someone confirm if it's definitely possible, and
we must have something set up wrong.
Thanks very much,
Benjohn
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