Re: DynaLoader issue with perl 5.12 on armhf when using fakechroot

Hi,

On Sun, Jun 19, 2011 at 10:30:32PM +0300, Niko Tyni wrote:
> > I so far failed to locate the source of this error but hopefully somebody finds
> > that issue interesting enough to give me a few pointers or can tell me to whom
> > else direct my issue.
> 
> The error source is the XS_VERSION_BOOTCHECK macro in XSUB.h.
> 
> If I read the code correctly, it's comparing the floating point number
> given to DynaLoader::bootstrap() in Hash/Util.pm against the XS_VERSION
> definition passed to the gcc in the Perl build; from the armhf build
> log of perl 5.12.3-7 [1]:
> 
>  cc -c   -D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -g   -DVERSION=\"0.07\" -DXS_VERSION=\"0.07\" -fPIC "-I../.."  -DPERL_EXT Util.c
> 
> It looks like the bootstsrap() argument gets truncated to 0 somehow.
> 
> I can't see how this could happen and what it has to do with fakechroot,
> but floating point conversions are involved and the XSUB.h code changed
> quite a bit between 5.10 and 5.12.
> 
> [1] http://buildd.debian-ports.org/status/fetch.php?pkg=perl&arch=armhf&ver=5.12.3-7&stamp=1305881838
> 
> Hope this helps a bit,
Thank you! This brings me already one step further in understanding the
issue!

I'm CC'ing the debian-embedded list - maybe someone sees another bit.

cheers, josch