[Bug 57143] New: Marshalled types can crash in mono_trace_enter_method on native to managed transition

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57143

Bug ID: 57143
           Summary: Marshalled types can crash in mono_trace_enter_method
                    on native to managed transition
           Product: Framework Mono
           Version: main
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: runtime
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail]
      Distribution: ---

Transitioning from native to managed (e.g. via com compatible wrapper) can
crash inside mono_trace_enter_method, when dealing with marshalled types, like
strings.

Say we call

public void Foo(unit i, [MarshalAs(UnmanagedType.LPStr)] string s)
{
   ...
}

from C with something like

comObj->Foo(10, "MyString");

we'll end up in mono_trace_enter_method, before the type marshaller for the
string is invoked, causing the trace function to interpret the C-string as
MonoType, which eventually crashes.