Arch Linux

Description:
When doing a standard system update on x86_64 by:
pacman -Syu
pacman asks if I want to update it first. If I choose 'yes', then I get this error:

:: gcc-libs and gcc-libs-multilib are in conflict. Remove gcc-libs-multilib? [y/N] n
error: unresolvable package conflicts detected
error: failed to prepare transaction (conflicting dependencies)
:: gcc-libs and gcc-libs-multilib are in conflict

:: gcc-libs and gcc-libs-multilib are in conflict. Remove gcc-libs-multilib? [y/N] y
error: failed to prepare transaction (could not satisfy dependencies)
:: gcc-multilib: requires gcc-libs-multilib=4.6.2-7

When I answer 'no' pacman updates without problems. Updated packages:
* pacman-4.0.2-1
* pacman-contrib-4.0.2-1

Additional info:
* pacman 4.0.1
* x86_64 with gcc-multilib and gcc-libs-multilib both in 4.6.2-7 installed

Steps to reproduce:
* Install pacman 4.0.1 on x86_64
* Do a full update by pacman -Syu
* Answer 'yes' to first update pacman