In `uv_thread_create_ex`, the page-rounding expression `(stack_size + pagesize - 1) & ~(pagesize - 1)` can integer-overflow when `stack_size` is near SIZE_MAX, producing a wrapped value that may silently fall below `uv__min_stack_size()` and cause a thread to be created with minimum stack rather than aborting; note that two refuters independently verified upstream libuv v1.x does not include an overflow guard here either, so this is not a divergence from libuv but a pre-existing limitation inher