Patch by Jeffrey Armstrong.

Patch by Jeffrey Armstrong.

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

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

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

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

(merged 3.2 fix)

a ctypes build failure with clang.

and pickling compatibility.

strings with whitespaces, backslashes or unbalanced braces.

strings with whitespaces, backslashes or unbalanced braces.

in any mapping, not only in an unicode string.

in any mapping, not only in an unicode string.

There is no guarantee that NULL is aligned.