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Created attachment 8808 [details]
When trying to compile a program using a dll that csc and ILDASM/ILASM consider valid the mono C# compiler encounters an internal compiler error.
The problem appears to be that in the dll's IL representation it is assigning an int16 value to a unit16 static literal and mono does not like this. I do not have access to the original source for the dll and was unable to determine what kind of source or compilation is required to generate the IL that mono errors out on.
public class Bar
public const int FIELD = Foo.CONSTANT;
B.il - IL for the attached B.dll
// Microsoft (R) .NET Framework IL Disassembler. Version 4.0.30319.1
// Copyright (c) Microsoft Corporation. All rights reserved.
// Metadata version: v2.0.50727
.assembly extern mscorlib
.hash algorithm 0x00008004
.class public abstract auto ansi TypeLib.Foo
// Mono doesn't like int16 here
// If I change it to uint16 the error goes away.
.field public static literal uint16 CONSTANT = int16(0xFFFF)
Command Lines - See attached for copy of B.dll
$ /opt/pkg/mono-3.8.0/bin/mcs /t:library /r:B.dll Reproducer.cs
Reproducer.cs(4,36): error CS0584: Internal compiler error: Unexpected error when loading type `TypeLib.Foo'
error CS0133: The expression being assigned to `Bar.FIELD' must be constant
Compilation failed: 2 error(s), 0 warnings
$ csc /t:library /r:B.dll Reproducer.cs
Microsoft (R) Visual C# Compiler version 4.0.30319.18408
for Microsoft (R) .NET Framework 4.5
Copyright (C) Microsoft Corporation. All rights reserved.
Edward Moriarty | Junior Engineer
Coverity | The Leader in Development Testing
Fixed in master