This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug c++/48003] [4.6 Regression] Regression in Template Constants from 4.5.2
- From: "redi at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 7 Mar 2011 13:42:44 +0000
- Subject: [Bug c++/48003] [4.6 Regression] Regression in Template Constants from 4.5.2
- Auto-submitted: auto-generated
- References: <bug-48003-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48003
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-03-07 13:42:37 UTC ---
http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#699 added integer
overflow ("a result that is not mathematically defined or not in the range of
representable values for its type") to the list of things that cause an
expression to not be a constant expression
The non-type template argument needs to be an integral constant-expression, but
it's not a constant expression due to the overflow, so the code is invalid.
Whether it should be accepted with -fpermissive is a separate matter, as is the
quality of diagnostic.