------- Comment #2 from jwakely dot gcc at gmail dot com 2010-01-21 10:35 ------- Yes, it's a defect (a concepts hangover) - the example is invalid according to the async spec. I pointed it out to Lawrence and he's dealing with it for the next draft.
I implemented async as defined in n3000 - I can change it to use result_of / decltype if desired. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42819
