64bit: C++ templates

Corinna Vinschen corinna-cygwin@cygwin.com
Mon May 27 13:22:00 GMT 2013

On May 27 14:49, marco atzeri wrote:
> Il 5/27/2013 1:15 PM, Corinna Vinschen ha scritto:
> >On May 27 12:59, marco atzeri wrote:
> >>Il 5/27/2013 12:42 PM, Corinna Vinschen ha scritto:
> >>>On May 27 12:22, marco atzeri wrote:
> >>>>Il 5/27/2013 11:53 AM, Corinna Vinschen ha scritto:
> >>>>>
> >>>>>And worse, the problem goes away when building without optimization.
> >>>>>There might be another GCC bug lurking in the background...
> >>>>>
> >>>>
> >>>>Probably there is more than one.
> >>>>I hit a gcc-4.8 optimization bug testing slang, the workaround
> >>>>was to build the 64 bit package without any optimization.
> >>>
> >>>slang is written in c++?
> >>
> >>in C
> >
> >And you built it with the default -mcmodel=medium, I assume.  Well,
> >it's not that gcc would be entirely bug free and 4.8.1 is lurking
> >around the corner already.  Any chance to create a simple testcase?
> default -mcmodel=medium
> Slang is a small library and the failure is
> during "make check" when UTF8 is not used
> http://mailman.jedsoft.org/pipermail/slang-users-l/2013/000788.html

Hmm.  For some reason that reminds me of the problem we had with the
localtime changes two weeks ago.  Just out of curiosity, would you mind
to try an optimized build again, but this time add the -fwrapv option?

> about the test, I need to look, but I will wait after 4.8.1

Sure, that's fine.


Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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