[PATCH] D47400: [libcxx] [test] Allow a standard library that implements LWG 1203 in istream.rvalue/rvalue.pass.cpp

[Billy Robert O'Neal III via Phabricator via cfe-commits]

BillyONeal added a comment.

Committed r339214

(If there are changes requested I'll do them in a follow up commit)


https://reviews.llvm.org/D47400