------- Comment #2 from joseph at codesourcery dot com 2008-12-06 19:09 ------- Subject: Re: __builtin_constant_p(t) ? t : 1 is not considered a constant integer expression
On Sat, 6 Dec 2008, sabre at nondot dot org wrote: > This is a bug in the C front-end. They need to use __builtin_choose_expr. No, it's a bug in the C++ front end, at least as regards the initializer. It's expressly documented that this is allowed in initializers. See also my note in <http://gcc.gnu.org/ml/gcc-patches/2008-10/msg01061.html> about how what should be allowed with __builtin_constant_p goes beyond what I put in my formal models of desired constant expression semantics for GCC in 2004. If you get this wrong for C then GCC will fail to bootstrap, as it's part of the GNU C semantics GCC relies on when being built with GCC. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38377
