This worked under Unix because wchar_t is 4 bytes wide.

(except for a Py_UNICODE_strchr() call)

(on Martin's buildbot it still seems a bit inaccurate)

Example:
./python -m timeit -s "f='{}' + '-' * 1024 + '{}'; s='abcd' * 16384" "f.format(s, s)"

-> before: 547 usec per loop
-> after: 13 usec per loop
-> 3.2: 22.5 usec per loop
-> 2.7: 12.6 usec per loop

contents cannot be read.

an unreadable directory.

new test cases for importing bad packages and unreadable packages dirs.

Fuchs, updated by Tiago Gonçalves.

This introduces a small private API for this common pattern.
The issue has been discovered thanks to Martin's huge-mem buildbot.

This introduces a small private API for this common pattern.
The issue has been discovered thanks to Martin's huge-mem buildbot.

supporting C integer types `ssize_t` and `size_t`, respectively.