Bug 6100 - NSData crashes in native code unless you define length and bytes, but those aren't abstract (they should be?)
Summary: NSData crashes in native code unless you define length and bytes, but those a...
Status: RESOLVED NOT_ON_ROADMAP
Alias: None
Product: MonoMac
Classification: Desktop
Component: Bindings ()
Version: unspecified
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2012-07-12 14:04 UTC by Chris Hamons
Modified: 2012-08-14 12:15 UTC (History)
2 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:


Attachments
Example (2.51 MB, application/x-download)
2012-07-12 14:04 UTC, Chris Hamons
Details


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RESOLVED NOT_ON_ROADMAP

Description Chris Hamons 2012-07-12 14:04:02 UTC
Created attachment 2190 [details]
Example

The example is a bit strange, but was the easiest to hack together. It appears that returning an NSData without Length and Bytes defined will crash in native code. Defining those property overloads "fixes" the problem.
Comment 1 Miguel de Icaza [MSFT] 2012-08-13 17:05:05 UTC
The methods can not be abstract, since NSData is a concrete type (you can instantiate it).

It merely means that if you subclass, you need to implement both.

Not sure that there is much that can be done, beyond documenting it.
Comment 2 Chris Hamons 2012-08-14 09:35:37 UTC
Is there no way you could make deriving from NSData but not overriding these methods a compile warning/error or something else that doesn't crash in native code?
Comment 3 Miguel de Icaza [MSFT] 2012-08-14 12:15:58 UTC
I can not think of anything bullet proof.