------- Additional Comments From mark at codesourcery dot com 2005-03-23 19:28 ------- Subject: Re: error: '<anonymous enum>' is/uses anonymous type'
bangerth at dealii dot org wrote: > ------- Additional Comments From bangerth at dealii dot org 2005-03-23 19:24 > ------- > That has been subject to discussion (i.e. whether the attempt to use an > unnamed enum as a template argument should just silently fail as a > substitution failure). However, it has been decided that this is a hard > error, not only a substitution failure. > > I am presently not quite sure about the reasoning, and I believe that there > was a DR or something still pending. Mark, do you remember the details? I > think this came up in a different PR before... It's swapped out of my brain, but there was another PR, and I did raise the issue for Steve Adamczyk, to be added to the core issue list. The basic point is that the SFINAE rules simply do not cover this case; they precisely describe a set of situations in which no error should be issued, and trying to use an anonymous type as a template parameter is not among them. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20589
