with truncated header or footer.
Added tests for reading truncated gzip and bzip2 files.

unicode-escape decoder requires memory for result corresponding to input size.
Fixes test for issue #16335.

Python 2.7 has only assertRaisesRegexp, not assertRaisesRegex

Fix a regression from changeset d544873d62e9 (issue #15989).

Patch by Jeffrey Armstrong.

when result of PyInt_AsLong() or PyLong_AsLong() narrowed
to int without checks.

This is a backport of changesets 13e2e44db99d and 525407d89277.

strings with whitespaces, backslashes or unbalanced braces.

in any mapping, not only in an unicode string.

could be the cause of a random failure).

special characters in the file path.

returns ESRCH for a zombie process, which is not POSIX-compliant.