https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86168
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- Author: redi Date: Fri Jun 15 16:11:12 2018 New Revision: 261636 URL: https://gcc.gnu.org/viewcvs?rev=261636&root=gcc&view=rev Log: PR libstdc++/86168 fix ambiguous default constructor PR libstdc++/86168 * include/bits/random.h (random_device(const string&)): Remove default argument. Modified: trunk/libstdc++-v3/ChangeLog trunk/libstdc++-v3/include/bits/random.h