libgcc1 is missing libgcc_s.so.1

[Gavin Panella]

An routine `apt-get dist-upgrade` today introduced gcc-4.9. This seems to omit the crucual libgcc_s.so.1 library, upon which apt-get for one relies. This caused apt to crash and emit the following:

$ apt-get
apt-get: error while loading shared libraries: libgcc_s.so.1: cannot open shared object file: No such file or directory

Using dpkg -i to reinstall gcc-4.8:

cd /var/cache/apt/archives
sudo dpkg -i libgcc1_1%3a4.8.2-15ubuntu3_amd64.deb libgcc1_1%3a4.8.2-15ubuntu3_i386.deb

has restored things to a working state again.

[Gavin Panella (allenap)]

Looks like this might have originated in gccgo:

$ apt-cache show libgcc1
Package: libgcc1
Priority: required
Section: libs
Installed-Size: 29
Maintainer: Ubuntu Core developers <email address hidden>
Original-Maintainer: Debian GCC Maintainers <email address hidden>
Architecture: amd64
Source: gccgo-4.9 (4.9-20140213-0ubuntu1)
Version: 1:4.9-20140213-0ubuntu1
Depends: gcc-4.9-base (= 4.9-20140213-0ubuntu1)
Pre-Depends: multiarch-support
Breaks: gcc-4.1, gcc-4.3 (<< 4.3.6-1), gcc-4.4 (<< 4.4.6-4), gcc-4.5 (<< 4.5.3-2)
Filename: pool/main/g/gccgo-4.9/libgcc1_4.9-20140213-0ubuntu1_amd64.deb
Size: 1286
MD5sum: 587b63a1ed27e275d02261606875c442
SHA1: 35142d2dca0738e0b0bb5130438ada01659c5491
SHA256: 0f903fe9f6517b81c3ffb2d2a3e9b2321a0bb8fafb0927fc92e715e593e7cb7e
Description-en: GCC support library
 Shared version of the support library, a library of internal subroutines
 that GCC uses to overcome shortcomings of particular machines, or
 special needs for some languages.
Description-md5: bbd60d723e97d8e06c04228ee4c76f10
Multi-Arch: same
Homepage: http://gcc.gnu.org/
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu
Supported: 9m
Task: minimal