[root@server1 ~]# pacman -Syu
:: Synchronizing package databases...
current [################] 100% 44K 28.9K/s 00:00:01
extra [################] 100% 190K 48.7K/s 00:00:03
:: getmail-4.0.1-1: ignoring package upgrade (4.2.5-1)
:: imap: local version (2004-3) is newer than repo version (2004a-1)
:: tpop3d: local version (1.5.3-2) is newer than repo version (1.5.3-1)
:: Above packages will be skipped. To manually upgrade use 'pacman -S <pkg>'

Targets: bash-3.0-6 bind-9.3.0-3 gnome-common-2.8.0-7 readline-5.0-3

Total Package Size: 2.5 MB

Proceed with upgrade? [Y/n] y

:: Retrieving packages from current...
bash-3.0-6 [################] 100% 387K 115.0K/s 00:00:03
bind-9.3.0-3 [################] 100% 1919K 175.2K/s 00:00:10
readline-5.0-3 [################] 100% 247K 93.6K/s 00:00:02

:: Retrieving packages from extra...
gnome-common-2.8.0-7 [################] 100% 8K 9.2K/s 00:00:00

checking package integrity... done.
loading package data... done.
checking for file conflicts... done.
upgrading bash... done.
upgrading bind... done.
upgrading gnome-common... done.
sh: error while loading shared libraries: libreadline.so.5: cannot open shared object file: No such file or directory
upgrading readline... done.

No bash segfault.