Subject: Re: [Boost-bugs] [Boost C++ Libraries] #5268: mpl::int_<INT_MIN> fails to compile under g++-4.6 although g++-4.5 works.
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-03-07 17:21:25
#5268: mpl::int_<INT_MIN> fails to compile under g++-4.6 although g++-4.5 works.
----------------------------------------------------+-----------------------
Reporter: Stirling Westrup <swestrup@â¦> | Owner: agurtovoy
Type: Bugs | Status: new
Milestone: To Be Determined | Component: mpl
Version: Boost 1.46.0 | Severity: Problem
Resolution: | Keywords: int_ INT_MIN
----------------------------------------------------+-----------------------
Comment (by Stirling Westrup <swestrup@â¦>):
I also reported this bug to GCC, and this is what they had to say about
it:
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.
So, it appears to be a genuine bug in mpl, which will need to be fixed.
-- Ticket URL: <https://svn.boost.org/trac/boost/ticket/5268#comment:1> Boost C++ Libraries <http://www.boost.org/> Boost provides free peer-reviewed portable C++ source libraries.
This archive was generated by hypermail 2.1.7 : 2017-02-16 18:50:05 UTC