[perl #121505] Can't build perl with gcc4.9 due to UB in sv.c

On Sun Apr 13 20:35:51 2014, tonyc wrote:
> On Thu Apr 10 00:03:05 2014, shay wrote:> > On 10 April 2014 00:57, Tony Cook via RT <perl...@perl.org>> > wrote:> > > On Wed Apr 09 14:55:54 2014, tonyc wrote:> > >> I still need to produce an update for win32/makefile.mk.> > >> > > Though op/numconvert.t doesn't fail, nor does any other relevant> > > test, with 4.9.0 20140218.> > >> > > I don't really see a way to pick out a version in makefile.mk> > > either,> > > the only real solution I see is to always add it.> > >> >> > Add a new CCTYPE, as is done for different MSVC++ versions? GCC49 or> > GCC490 if you're using gcc-4.9.0 or higher?> > Adding extra CCTYPE values means touching every place that looks at> CCTYPE.> > I tried to add GCCVERSION and then parse that using findstr, but it> was unwieldly[1] and didn't work, since dmake treats the non-zero exit> from findstr when it doesn't find the string as a build-time error.> > I ended up adding a GCCWRAPV macro that can be overridden from the> dmake command-line which enables -fwrapv by default.> > This builds and tests ok with the gcc 4.7.3 included with the> strawberry perl I have installed.> > It builds perl successfully with a mingw gcc-4.9 snapshot, but I> suspect testing would fail due to some strangeness in the built> Errno.pm (the errno codes have l (lowercase L) suffixes.> > For review/comment.> 

I don't see any new attachment or smoke-me branch for review/comment. Am I missing something?

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via perlbug:  queue: perl5 status: open
https://rt.perl.org/Ticket/Display.html?id=121505