On Mon, Sep 14, 2015 at 4:16 PM, Duncan Murdoch <murdoch.dun...@gmail.com> wrote: > I think the reason for the earlier restriction is the assumption that > eventually gcc will be fixed and this workaround won't be necessary, but > apparently 5.2.0 still has the same problem.
I tested this hypothesis by replacing '__GNUC__ <= 4' with '__GNUC__ <= 5' and rebuilding R, but this introduces a whole lot of problems that were not there before. In particular R crashes when using the graphics device, which it did not without this fix. I first thought this was an unrelated random crash, but 'make check' consistently fails in base-Ex.R at the first invocation of boxplot(). Same for 'check recommended', each package fails when making a plot. None of this happens with the original source code, where everything works fine, besides the optimized version of sqrt(NA) giving NaN. Did something perhaps change in gcc 5 for the ISNAN macro that makes it unsuitable to be used in this way? FWIW it looks like the original fix was introduced by Luke about a year ago in r66652: https://github.com/wch/r-source/commit/e9aaf8fdeddf27c2a9078cd214a41475c8ff6f40 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
