R 64 on Intel Mac check problem

On 26/03/2008, at 10:00 PM, Georgios wrote:

I have installed gcc 4.2 and gfortran 4.2 from the available sources
on the
web page and am using the copy and paste guide on the page.

Now everything seems to be going fine until the point where the R
packages
are tested. In particular when the regression tests are run I get the
following.

running regression tests
running code in 'reg-tests-1.R' ...\c
OK
running code in 'reg-tests-2.R' ...\c
OK
comparing 'reg-tests-2.Rout' to './reg-tests-2.Rout.save' ...\c
3756c3756
<   The decimal point is 1 digit(s) to the right of the |
---

The decimal point is at the |

3762c3762

It may or may not be relevant, but there is a catastrophic bug in
log10() in 10.5.2 for x86_64: it returns 0 for all arguments.  This
has been discussed on the Scitech list.  Apple think they have fixed
it, but I am sure they would want to hear of other cases or possible
compiler issues, if it is their compiler you are using.

So if you can get a minimal test case it would be very good to submit
a bug.  It may be worth doing even if you cannot get a minimal case
because all the sources are readily available.

Finally last time I looked a few days back Simon's 64 bit Intel builds
were failing.

Yes, the gcc-4.2 is known to be broken for x86_64 as you describe  
above (or in fact it miscompiles a few other things, too).  
Interestingly llvm-gcc-4.2 suffers from the same problem. That is  
the reason why the 64-bit binaries are currently not offered.
Switching to gcc-4.0 breaks other things on other targets, so there  
is no universal (and maintainable) solution that I'm aware of.

thanks for all the responses,
just to mention that I have also experimented with quite a few versions of
the compiler and there was  always a failure at a different test, filing a
bug report is a good idea. Does the 64 version work as expected in Linux?

thanks,
georgios


On Wed, Mar 26, 2008 at 8:05 PM, Bill Northcott <w.northcott at unsw.edu.au>
wrote:

On 26/03/2008, at 10:00 PM, Georgios wrote:

I have installed gcc 4.2 and gfortran 4.2 from the available sources
on the
web page and am using the copy and paste guide on the page.

Now everything seems to be going fine until the point where the R
packages
are tested. In particular when the regression tests are run I get the
following.

running regression tests
running code in 'reg-tests-1.R' ...\c
OK
running code in 'reg-tests-2.R' ...\c
OK
comparing 'reg-tests-2.Rout' to './reg-tests-2.Rout.save' ...\c
3756c3756
<   The decimal point is 1 digit(s) to the right of the |
---

 The decimal point is at the |

3762c3762

It may or may not be relevant, but there is a catastrophic bug in
log10() in 10.5.2 for x86_64: it returns 0 for all arguments.  This
has been discussed on the Scitech list.  Apple think they have fixed
it, but I am sure they would want to hear of other cases or possible
compiler issues, if it is their compiler you are using.

So if you can get a minimal test case it would be very good to submit
a bug.  It may be worth doing even if you cannot get a minimal case
because all the sources are readily available.

Finally last time I looked a few days back Simon's 64 bit Intel builds
were failing.

Bill Northcott

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