Why is ccrewrite.exe not doing anything from the command line?

.net-4.0, ccrewrite, code-contracts

Solution

Okay, this has been answered in the MSDN forum. For once, it wasn't really me being entirely stupid - it's something that could really do with a warning.

Read the forum post for full details, but the basic problem is that `ccrewrite` couldn't find the contract classes: it was looking in the .NET 3.5 CLR version of `mscorlib` instead of the .NET 4.0 one.

This can be fixed by explicitly listing the path to the relevant assembly:

> ccrewrite /o:rewrittendummy.exe dummy.exe 
  /libpaths:%SystemRoot%\Microsoft.Net\Framework\v4.0.20506

Problem

I've got Code Contracts working fine from inside Visual Studio 2010, but I can't get `ccrewrite.exe` to do anything useful from the command line. Here's a sample app: ``` using System.Diagnostics.Contracts; public class Dummy { public static void Main(string[] args) { Contract.Requires(args.Length > 0); } } ``` I then compile the code and run ccrewrite.exe on it: ``` > csc /debug+ /D:CONTRACTS_FULL Dummy.cs > ccrewrite /o:RewrittenDummy.exe Dummy.exe elapsed time: 61ms ``` There's no `RewrittenDummy.exe` file afterwards. I've tried loads of options, but nothing's making any difference. A few things I've noticed: - It's definitely loading Dummy.exe, because if I specify a non-existent file, it dies - Dummy.exe definitely contains references to Contract - if I run it with no arguments, it fails appropriately (but the error message hasn't been filled in as I'd expect if it had been rewritten) - Using postconditions and invariants makes no difference I've tried turning warnings and verbosity up, and that doesn't help at all What am I doing wrong? (Also asked as a question in the Code Contracts forum. I'll add any relevant answers here myself.)

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