Why is the CLR's jmp instruction unverifiable?

Posted by naasking on Stack Overflow See other posts from Stack Overflow or by naasking
Published on 2010-05-18T00:00:52Z Indexed on 2010/05/18 18:20 UTC
Read the original article Hit count: 203

Filed under:

c#

|

clr

|

cil

The title says it all. I've known about the jmp instruction for awhile, but it never struck me as being even remotely unsafe. I recently had cause to check the CIL specs and was very surprised to discover jmp is considered unverifiable.

Any explanations would be much appreciated.

© Stack Overflow or respective owner

Related posts about c#

.NET WebRequest.PreAuthenticate not quite what it sounds like

as seen on West-Wind - Search for 'West-Wind'
I’ve run into the problem a few times now: How to pre-authenticate .NET WebRequest calls doing an HTTP call to the server – essentially send authentication credentials on the very first request instead of waiting for a server challenge first? At first glance this sound like it should be easy:… >>> More
HttpWebRequest and Ignoring SSL Certificate Errors

as seen on West-Wind - Search for 'West-Wind'
Man I can't believe this. I'm still mucking around with OFX servers and it drives me absolutely crazy how some these servers are just so unbelievably misconfigured. I've recently hit three different 3 major brokerages which fail HTTP validation with bad or corrupt certificates at least according to… >>> More
The dynamic Type in C# Simplifies COM Member Access from Visual FoxPro

as seen on West-Wind - Search for 'West-Wind'
I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot… >>> More
Dynamic Type to do away with Reflection

as seen on West-Wind - Search for 'West-Wind'
The dynamic type in C# 4.0 is a welcome addition to the language. One thing I’ve been doing a lot with it is to remove explicit Reflection code that’s often necessary when you ‘dynamically’ need to walk and object hierarchy. In the past I’ve had a number of ReflectionUtils that used string based expressions… >>> More
Finding a Relative Path in .NET

as seen on West-Wind - Search for 'West-Wind'
Here’s a nice and simple path utility that I’ve needed in a number of applications: I need to find a relative path based on a base path. So if I’m working in a folder called c:\temp\templates\ and I want to find a relative path for c:\temp\templates\subdir\test.txt I want to receive back subdir\test… >>> More

Related posts about clr

Loading/Executing CLR 2.0 assemblies in CLR 4.0

as seen on Stack Overflow - Search for 'Stack Overflow'
Can the CLR 4.0 execute CLR 2.0 IL without the need for source code recompilation? >>> More
Declare a Nullable int (int?) using XAML

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to bind a combo box to a property on my ViewModel. The target type is short? and I would like to have null be an option. Basically I would like the value of the first item in the combo box be {x:Null}. <ComboBox Grid.Row="9" Grid.Column="1" SelectedValue="{Binding Priority}"> … >>> More
IIS: 404 error on every file in a virtual directory.

as seen on Server Fault - Search for 'Server Fault'
I am trying to write my first WCF service for IIS 6.0. I followed the instructions on MSDN. I created the virtual directory, I can browse the directory fine but anything I click (even a sub-folder in that folder) gives me a 404 error. What am I missing that I can not access any files or folders?… >>> More
IIS: 404 error on every file in a virtual directory.

as seen on Server Fault - Search for 'Server Fault'
I am trying to write my first WCF service for IIS 6.0. I followed the instructions on MSDN. I created the virtual directory, I can browse the directory fine but anything I click (even a sub-folder in that folder) gives me a 404 error. What am I missing that I can not access any files or folders?… >>> More
A CLR-supporting browser (4 replies)

as seen on .NET 247 - Search for '.NET 247'
Microsoft, by seemingly ignoring the huge benefits of JIT compiling VMs on the browser and instead pushing Silverlight (which is pretty awesome though), is showing it STILL hasn't gotten the Web. (The fact that I can't seem to post on these newsgroups using Firefox (!!!) is yet another glaring example)… >>> More