[Bug c++/53181] New: static_assert sees as non constant the comparison between a constexpr and a template argument

[blaffablaffa at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53181

             Bug #: 53181
           Summary: static_assert sees as non constant the comparison
                    between a constexpr and a template argument
    Classification: Unclassified
           Product: gcc
           Version: 4.6.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: blaffabla...@gmail.com


Created attachment 27278
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27278
test case

As per title.
The weird is that it seems that the constexpr-ness seems to changes if the
expression inside static_assert evaluates to true (compiles, expression seen as
constexpr) or false (fails to compile, but not due to the assertion failing but
to the described error).