[Mono-dev] Issues with StructureToPtr- and PtrToStructure-wrapper building

[Robert Jordan]

On 08.02.2011 11:31, Robert Jordan wrote:
> On 08.02.2011 10:51, Martin Däumler wrote:
>> When trying to adopt the pre-compilation routine to the mscorlib,
>> some classes cause a SIGABRT. For example, 'System.MonoEnumInfo',
>> 'System.Configuration.Assemblies.AssemblyHash' or 'ProcessMessageRes'
>> do not work. The stacktrace is always as follows:
>>
>> ** ERROR **: Structure field of type Byte[] can't be marshalled as LPArray
>> aborting...
>
> Not all structs or classes marked with
> [StructLayout(LayoutKind.Sequential)] are actually "blittable"
> (as in suitable for p/invoke marshaling).
>
> When you look at System.MonoEnumInfo you'll see that
> it contains non-blittable fields.
>
>> So, my question is: Which classes and structs allow the generation
>> of StructureToPtr- and PtrToStructure-wrappers at all and how to
>> determine these?
>
> You may want to check the MonoClass.blittable field before
> compiling a wrapper for a given type, but I'm sure it's enough.

s/I'm sure/I'm not sure/ ;)