Martin Panter added the comment:
Strictly speaking, Python 2.7 never had special support for RTLD_MEMBER or
find_library(). That is why I am unsure about many of these changes being done
in 2.7. They seem more like new features than bug fixes. Especially once you
start talking about a smart CDLL() that tests for a file and then falls back to
RTLD_MEMBER.
Whether you represent an archive member as an (archive, member) tuple, or as an
"archive(member)" string, or something else, it is still an extension of the
API of CDLL(), and arguably also of find_library().
I think I have already tried to explain that on Linux, find_library("libm.so")
is far from normal usage (although may be technically legal if there was a
library called liblibm.so.so).
Also, on Linux I wouldn’t recommend CDLL("libcrypt.so"), which relies on a file
only intended for build time. On Debian, the glibc library
<https://packages.debian.org/source/jessie/glibc> has separate packages for
shared libraries (libc6) and development libraries (libc6-dev). It should be
possible to run programs with libc6 installed, but without libc6-dev. Looking
at the file lists for “i386” architecture, libc6-dev includes:
/usr/lib/i386-linux-gnu/libcrypt.a
/usr/lib/i386-linux-gnu/libcrypt.so
It symbolically links to /lib/i386-linux-gnu/libcrypt.so.1, which is provided
by libc6:
/lib/i386-linux-gnu/libcrypt-2.19.so
/lib/i386-linux-gnu/libcrypt.so.1
So on Debian (and with Linux in general), CDLL("libcrypt.so") may work in some
cases, but you should normally use CDLL("libcrypt.so.1") instead.
Usually people just upload a new version of the original patch (original
changes, plus new changes, in one file). I think it would be too confusing
looking at differences between two patches.
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<http://bugs.python.org/issue26439>
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