[istream.syn][ostream.syn] update synopses according to LWG1203#4084
Merged
jensmaurer merged 1 commit intocplusplus:masterfrom Jul 21, 2020
frederick-vs-ja:patch-1
Merged
[istream.syn][ostream.syn] update synopses according to LWG1203#4084jensmaurer merged 1 commit intocplusplus:masterfrom frederick-vs-ja:patch-1
jensmaurer merged 1 commit intocplusplus:masterfrom
frederick-vs-ja:patch-1
