Build the _multiprocessing.posixshmem extension with the Limited C API. * Add <errno.h> include. * Replace PyUnicode_AsUTF8() with PyUnicode_AsUTF8AndSize().
Build the _multiprocessing.posixshmem extension with the Limited C API. * Add <errno.h> include. * Replace PyUnicode_AsUTF8() with PyUnicode_AsUTF8AndSize().