[Bug bootstrap/69464] [6 Regression]: bootstrap failure on CentOS 5.11: error: ‘swap’ is not a member of ‘std’

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69464

--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
std::swap was defined in header <algorithm> until c++11.