LWG4188 ostream::sentry destructor should handle exceptions

Author: burblebee

source/iostreams.tex

@@ -6257,7 +6257,8 @@
 is
 \tcode{true},
 calls
-\tcode{os.rdbuf()->pubsync()}. If that function returns $-1$, sets \tcode{badbit} in
+\tcode{os.rdbuf()->pubsync()}. If that function returns $-1$ or
+exits via an exception, sets \tcode{badbit} in
 \tcode{os.rdstate()} without propagating an exception.
 \end{itemdescr}