(see issue 13125).

as "The pipe is being closed") is now mapped to POSIX errno EPIPE
(previously EINVAL).

as "The pipe is being closed") is now mapped to POSIX errno EPIPE
(previously EINVAL).

Improve also str.replace(a, a) test

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.