.NET application crashes with memory access exception

[GennadyGS]

After updating to latest Z3 version (4.12.2) from version 4.11.2 application using .NET API crashes with error:

Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Repeat 2 times:
--------------------------------
   at Microsoft.Z3.Native+LIB.Z3_del_constructor(IntPtr, IntPtr)
--------------------------------
   at Microsoft.Z3.Native.Z3_del_constructor(IntPtr, IntPtr)
   at Microsoft.Z3.Constructor.Finalize()

As a result of investigation, I have discovered that it started to reproduce from version 4.12.0.

Here is the in simplest steps to reproduce, which I was able to found:

using System;
using Microsoft.Z3;

CreateConstructor();
GC.Collect();

void CreateConstructor()
{
    using var context = new Context();
    var constructor = context.MkConstructor("a", "a");
}

This sample does not reproduce the error stably, but for me at least more than in 50% cases, so it may require to run a couple of times.
Analyzing the changes between 4.11.2 and 4.12.0 I have suspicion that regression was introduced by PR #6361. Cannot verify this since I was not able to build Z3 solution on my machine following the instruction.

[NikolajBjorner]

I will consider this as fixed.

[GennadyGS]

It works.
Thanks!