Implement a basic GC based on the mark-and-sweep algorithm, without requiring
manually specifying "roots", which vastly simplifies the code.
Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

So the garbage collector can traverse it.
Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54101

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53971

On Windows processes sometimes start during test_services_exe() so that
the size returned by the first NtQuerySystemInformation() is no longer
sufficient for the second call.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54094

It looks like there was a change on the websocket test server that causes our
send operations to block. Reducing the size of the send buffer works around the
test failures. The tests still succeed on Windows, which suggests that native
sends large buffers in smaller chunks.

No longer used since e164b8ce.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54096

This fixes GCC12 warnings about accessing a too small object.

    wine/dlls/msvcrt/tests/cpp.c: In function 'test_rtti':
    wine/dlls/msvcrt/tests/cpp.c:1036:45: warning: array subscript 2 is outside array bounds of 'void[4]' [-Warray-bounds]
     1036 |       ok (casted == (char*)&child_class_sig0+8, "failed cast to simple_class (%p %p)\n", casted, &child_class_sig0);
          |                     ~~~~~~~~~~~~~~~~~~~~~~~~^~
Signed-off-by: Piotr Caban <piotr.caban@codeweavers.com>
Signed-off-by: Eric Pouech <eric.pouech@gmail.com>

GCC 12 complains about accessing a too small object.

In function 'test__AdjustPointer',
    inlined from 'func_msvcr90' at wine/dlls/msvcr90/tests/msvcr90.c:2515:5:
wine/dlls/msvcr90/tests/msvcr90.c:1556:30: warning: array subscript 30 is outside array bounds of 'void[8]' [-Warray-bounds]
 1556 |         {&obj1, (char*)&obj1 + obj.off, {0, 0, 0}},
      |                 ~~~~~~~~~~~~~^~~~~~~~~

Since we're only checking the addresses and not the underlying objects,
use uintptr_t instead of pointers.
Signed-off-by: Eric Pouech <eric.pouech@gmail.com>

Signed-off-by: Eric Pouech <eric.pouech@gmail.com>