https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104559
Jiang An <de34 at live dot cn> changed:
What |Removed |Added
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CC| |de34 at live dot cn
--- Comment #3 from Jiang An <de34 at live dot cn> ---
The default argument has been present in a very early (perhaps the first)
version of libstdc++.
https://github.com/gcc-mirror/gcc/blob/6599da043e22e96ac830fb50a61c1b6d95d1b142/libstdc%2B%2B/stl/bvector.h#L472
AFIAK this default argument has never been a part of the C++ standard, but was
in in some prehistoric working drafts. Seems removed by WG21-N1051.
http://www.open-std.org/JTC1/SC22/WG21/docs/wp/html/cd2/lib-containers.html#lib.vector.bool
http://www.open-std.org/JTC1/SC22/WG21/docs/papers/1997/N1051.asc
