Bug#785939: libstdc++6: directory /usr/share/gcc-4.9/ not removed on upgrade from 4.9.2-10 to 5.1.1-5

[Daniele Forsi <dforsi@gmail.com>]

Package: libstdc++6
Version: 5.1.1-5
Severity: minor

Dear Maintainer,

during "apt-get upgrade" I got the following warnings about directories not empty:
Preparativi per estrarre .../libstdc++6_5.1.1-5_i386.deb...
Estrazione di libstdc++6:i386 (5.1.1-5) su (4.9.2-10)...
dpkg: attenzione: impossibile eliminare la vecchia directory "/usr/share/gcc-4.9/python/libstdcxx/v6": Directory non vuota
dpkg: attenzione: impossibile eliminare la vecchia directory "/usr/share/gcc-4.9/python/libstdcxx": Directory non vuota
dpkg: attenzione: impossibile eliminare la vecchia directory "/usr/share/gcc-4.9/python": Directory non vuota
dpkg: attenzione: impossibile eliminare la vecchia directory "/usr/share/gcc-4.9": Directory non vuota

In fact there are two __pycache__ directories:
$ tree /usr/share/gcc-4.9/
/usr/share/gcc-4.9/
└── python
    └── libstdcxx
        ├── __pycache__
        │   └── __init__.cpython-34.pyc
        └── v6
            └── __pycache__
                ├── __init__.cpython-34.pyc
                └── printers.cpython-34.pyc

5 directories, 3 files


-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 3.16.0-4-686-pae (SMP w/2 CPU cores)
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libstdc++6 depends on:
ii  gcc-5-base         5.1.1-5
ii  libc6              2.19-18
ii  libgcc1            1:5.1.1-5
ii  multiarch-support  2.19-18

libstdc++6 recommends no packages.

libstdc++6 suggests no packages.

-- no debconf information