On Tue, Apr 1, 2014 at 10:54 AM, Jonathan Wakely <jwakely....@gmail.com> wrote: > On 1 April 2014 14:43, Daniel Gutson wrote: >> >> The attached patch attempts to fix this issue. Since I no longer have >> write access, please >> apply this for me if correct (is the 4.8 branch still alive for adding >> fixes?). > > For regressions, yes, but I don't think this is a regression.
Why not? (I don't know the criteria, please let me know). Upcoming Ubuntu LTS will have g++ 4.8.2, having this fixed will be extremely useful. > >> Regarding 4.9, gcc fails to complain at all when -pedantic is passed, >> even specifying -std=c++03. >> Please let me know if this is truly a bug, in which case I could also >> fix it for the latest version as well > > I believe it's by design. The C++11 standard says in So what about -std=c++03 or earlier standards? BTW, shouldn't 4.8 be fixed accordingly for C++11 as well? > [expr.reinterpret.cast] paragraph 8: > > "Converting a function pointer to an object pointer type or vice versa > is conditionally-supported. The meaning > of such a conversion is implementation-defined, except that if an > implementation supports conversions in > both directions, converting a prvalue of one type to the other type > and back, possibly with different cv- > qualification, shall yield the original pointer value." > > G++ has always supported it, but we previously warned with -pedantic > that it was not standard-conforming behaviour. Now it is conforming > (as long as we document the implementation-defined meaning of the > conversion). -- Daniel F. Gutson Chief Engineering Officer, SPD San Lorenzo 47, 3rd Floor, Office 5 Córdoba, Argentina Phone: +54 351 4217888 / +54 351 4218211 Skype: dgutson
