[R-sig-Debian] Ubuntu 16.10 Yakkety Yak uses GCC 6 but -std=c++98 is missing

[Kirill Müller]

On 13.11.2016 00:00, Dirk Eddelbuettel wrote:
> On 12 November 2016 at 22:54, Kirill Müller wrote:
>
> [... lots of stuff deleted ...]
>
> | I noticed this because plogr logging crashed in dplyr (compiled with gcc
> | 6) right after upgrading to yakkety; I still had a gcc-5 built version
> | of Rcpp installed. As soon as I added -std, everything worked as before.
> | No minimal example, sorry. Don't we need "-std=c++98" in Makevars
> | anyway, even if it's just to avoid users using C++11 constructs and then
> | wondering why their packages fail on CRAN?
>
> There is still no minimally preproducible example here; just a (pardon me
> here) rambling description of a hasty system upgrade.
>
> It is _somewhat common_ to have to recompile C++ shared objects when compiler
> major versions change.
>
> So I am unsure if we have actually demonstrated a bug here.
Don't we need "-std=c++98" for GCC 6 in Makevars anyway, even if it's 
just to save users from using C++11 constructs and then wondering why 
their packages fail on CRAN/winbuilder? In my case it also saves me from 
recompiling "all of CRAN" (at least for now); that's a nice side effect, 
but the first part also looks important to me.


-Kirill