[Bug libstdc++/56166] std::string::clear() can throw despite being marked noexcept

[zackw at panix dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56166

--- Comment #1 from Zack Weinberg <zackw at panix dot com> 2013-01-31 18:21:49 UTC ---
Created attachment 29320
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29320
test case

In case you're wondering, this was an attempt to do at least *some* testing of
a library's robustness in the face of memory allocation failure.