[2.7] closes bpo-34400: Fix undefined behavior in parsetok(). (GH-4439)#8770

miss-islington merged 1 commit intopython:2.7python/cpython:2.7from

miss-islington:backport-7c4ab2a-2.7miss-islington/cpython:backport-7c4ab2a-2.7Copy head branch name to clipboard