[Rd] R, Macports and C++ streams

Ernest Turro ernest.turro at ic.ac.uk
Wed Jul 30 18:35:05 CEST 2008

On 30 Jul 2008, at 15:18, Kjell Konis wrote:

> I found this in Writing R Extensions:
> "Using C++ iostreams, as in this example, is best avoided. There is  
> no guarantee that the output will appear in the R console, and  
> indeed it will not on the R for Windows console. Use R code or the C  
> entry points (see Printing) for all I/O if at all possible."
> That is, use Rprintf() instead. The fact that your code works with  
> one version of gcc and not another can probably be chalked up to  
> coincidence.

The doc warns that the output to stdout using iostreams may not appear  
on the console, there is no indication that doing this may crash R  
(and this has never happened to me before). Certainly, the use of file  
streams (fstreams) should work just fine.


> Kjell
> On Jul 30, 2008, at 3:45 PM, Ernest Turro wrote:
>> Dear all,
>> R on Macports relies on GCC 4.3 to build packages. I find that
>> packages with shared objects that use C++ streams crash R if they're
>> compiled using Macports' gcc43, but work fine if compiled in exactly
>> the same way using Apple-supplied GCC 4.2. Has anyone here had the
>> same issue/know what is causing this problem?
>> Thanks,
>> Ernest
>> ______________________________________________
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