In file included from ./Include/internal/pycore_global_objects.h:12:
./Include/internal/pycore_gc.h:230:21: warning: implicit conversion changes signedness: 'int' to 'uintptr_t' (aka 'unsigned long') [-Wsign-conversion]
    gc->_gc_prev &= ~_PyGC_PREV_MASK_FINALIZED;
                 ~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~

In file included from ./Include/internal/pycore_code.h:13:
./Include/internal/pycore_backoff.h:78:66: warning: implicit conversion loses integer precision: 'int' to 'uint16_t' (aka 'unsigned short') [-Wimplicit-int-conversion]
        return make_backoff_counter((1 << (counter.backoff + 1)) - 1, counter.backoff + 1);
               ~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~

In file included from ./Include/internal/pycore_mimalloc.h:45:
./Include/internal/mimalloc/mimalloc/internal.h:489:84: warning: implicit conversion changes signedness: 'int' to 'mi_thread_free_t' (aka 'unsigned long') [-Wsign-conversion]
  return (mi_block_t*)(mi_atomic_load_relaxed(&((mi_page_t*)page)->xthread_free) & ~3);
                                                                                 ~ ^~
./Include/internal/mimalloc/mimalloc/internal.h:508:29: warning: implicit conversion changes signedness: 'int' to 'mi_thread_free_t' (aka 'unsigned long') [-Wsign-conversion]
  return (mi_block_t*)(tf & ~0x03);
                          ~ ^~~~~
./Include/internal/mimalloc/mimalloc/internal.h:806:10: warning: implicit conversion changes signedness: 'int' to 'size_t' (aka 'unsigned long') [-Wsign-conversion]
  return __builtin_clzl(x);
  ~~~~~~ ^~~~~~~~~~~~~~~~~
./Include/internal/mimalloc/mimalloc/internal.h:814:10: warning: implicit conversion changes signedness: 'int' to 'size_t' (aka 'unsigned long') [-Wsign-conversion]
  return __builtin_ctzl(x);
  ~~~~~~ ^~~~~~~~~~~~~~~~~
./Modules/getpath.c:264:48: warning: implicit conversion changes signedness: 'Py_ssize_t' (aka 'long') to 'unsigned long' [-Wsign-conversion]
    wchar_t **parts = (wchar_t **)PyMem_Malloc(n * sizeof(wchar_t *));
                                               ^ ~
./Modules/getpath.c:269:22: warning: implicit conversion changes signedness: 'Py_ssize_t' (aka 'long') to 'unsigned long' [-Wsign-conversion]
    memset(parts, 0, n * sizeof(wchar_t *));
                     ^ ~
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/secure/_string.h:77:33: note: expanded from macro 'memset'
                __builtin___memset_chk (dest, __VA_ARGS__, __darwin_obsz0 (dest))
                                              ^~~~~~~~~~~
./Modules/getpath.c:295:61: warning: implicit conversion changes signedness: 'Py_ssize_t' (aka 'long') to 'unsigned long' [-Wsign-conversion]
    wchar_t *final = cchFinal > 0 ? (wchar_t *)PyMem_Malloc(cchFinal * sizeof(wchar_t)) : NULL;
                                                            ^~~~~~~~ ~
./Modules/getpath.c:318:57: warning: implicit conversion changes signedness: 'Py_ssize_t' (aka 'long') to 'size_t' (aka 'unsigned long') [-Wsign-conversion]
            } else if (_Py_add_relfile(final, parts[i], cchFinal) < 0) {
                       ~~~~~~~~~~~~~~~                  ^~~~~~~~
./Modules/getpath.c:385:63: warning: implicit conversion changes signedness: 'size_t' (aka 'unsigned long') to 'Py_ssize_t' (aka 'long') [-Wsign-conversion]
    wchar_t *wbuffer = _Py_DecodeUTF8_surrogateescape(buffer, cb, &len);
                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~         ^~
./Modules/getpath.c:663:43: warning: implicit conversion changes signedness: 'size_t' (aka 'unsigned long') to 'Py_ssize_t' (aka 'long') [-Wsign-conversion]
            u = PyUnicode_FromWideChar(w, len);
                ~~~~~~~~~~~~~~~~~~~~~~    ^~~
./Modules/getpath.c:707:43: warning: implicit conversion changes signedness: 'size_t' (aka 'unsigned long') to 'Py_ssize_t' (aka 'long') [-Wsign-conversion]
            u = PyUnicode_FromWideChar(w, len);
                ~~~~~~~~~~~~~~~~~~~~~~    ^~~
13 warnings generated.