On Nov 30, 2012, at 10:02 AM, Donatella Quagli wrote:
Hello everybody,
I have written a script with two inline cfunctions. The script
crashes from time to time with:
*** caught segfault ***
address 0x10, cause 'memory not mapped'
The crashs happen within R code after the cfunctions were executed.
Nevertheless I think
that the pointers in my cfunctions are not used correctly.
I tried to find some examples for debugging tools. I found something
like "R -d gdb". But I
could not find an example how to use it with #!/usr/bin/Rscript. And
I cannot source the script
within a running R session because I must run it with some args.
Can anybody tell me as a non nerd step by step what I can do to
locate the problem? Can
you recommend tools? If so how are they used with Rscript?
I think you may have difficulty defending your non-nerd claim if you
are writing cfunctions in R. That said, you may want to look at a very
recent SO answer by Hadley Wickham on StackOverflow:
http://stackoverflow.com/questions/13661065/r-superimpose-histogram-fits-in-one-plot
(I'm less nerdy than you, but it does appear that Hadley's code
demonstrates efforts at checking for available memory and you may
benefit from a worked example in Rcpp.)
--
David Winsemius, MD
Alameda, CA, USA
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