--- "William A. Rowe, Jr." <[EMAIL PROTECTED]> wrote: > Can you pinpoint anywhere that we actually reference > the unmanaged data from managed code (forcing some > marshalling), or have we successfully kept all of > the unmanaged data references within the context of > unmanaged code?
I looked and looked and ... concluded that I am learning a lot by looking at the optimal way you did this 'inerfacing' and that problem reported is probably a compiler bug. If it were present in earlier runtimes one could be more lenient and consider it as an 'unpolished feature', due to pinvoke initially intended for lanaguages like C#. I can only notice details like this: -when there is no dummy apr_table_t compiler generates pinvokeimpl for apr_table_elts() -when dummy is present apr_table_elts() is not generated -apr_table_setn() is always present as pinvokeimpl, whether you define dummy or no. -because apr_table_elts() uses pointer to constant apr_table_t, compiler is apparently trying to make some intelligent conclusions about the invocation of native methods and marshalling if its parameters. -exception does not happen in WorkerRequest constructor where apr_table_elts() is called. So CLR is not concerned about apr_table_t type at this point, whether you have its dummy definition or no. - managed code must make some determination about types and sizes inside request_rec because it passes its members to native calls, like in SetKnownResponseHeader: .... IL_0065: ldfld valuetype Apache.Native.request_rec* Apache.Web.WorkerRequest::rr IL_006a: ldc.i4 0xa8 IL_006f: add IL_0070: ldind.i4 IL_0071: ldloc.3 IL_0072: ldloc.0 IL_0073: call void modopt([mscorlib]System.Runtime.CompilerServices.CallConvStdcall) apr_table_setn(valuetype Apache.Native.apr_table_t*, .... I'm not sure this issue is worthy of spending more time, except maybe as the preparation for solving possible troubles in the future. Tony __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
