[Bug libstdc++/90618] new test case testsuite/20_util/shared_ptr/cons/alias-rval.cc introduced in r271583 fails

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90618

--- Comment #2 from seurer at gcc dot gnu.org ---
Sorry, I looked but didn't see a fix.