[Rd] Fwd: No source view when using gdb

Martyn Plummer plummerm at iarc.fr
Thu Dec 11 15:00:24 CET 2014

On Thu, 2014-12-11 at 14:00 +0100, Pierrick Bruneau wrote:
> Dear R contributors,
> Say I want to debug some C code invoked through .Call() - say
> "varbayes" in the VBmix package. following the instructions in
> "Writing R Extensions", I perform the following actions :
> R -d gdb
> run
> library(VBmix)
> break varbayes
> signal 0
> mod <- varbayes(as.matrix(iris)[,1:4], 2)
> The breakpoint is indeed activated, seemingly at the correct position
> in the source file, but instead of the actual text at the respective
> line, I get the following :
> 69    varbayes.c: No such file or directory.
> Issuing "next" afterwards seems to attain the expected purpose (step
> by step progression), but source code lines are replaced by, e.g. :
> 72    in varbayes.c
> There should be some way of "installing" the source code files, but I
> did not find R-specific info there. Does someone have a clue for my
> problem?

This happens when you install a package from the tarball. The source is
unpacked into a temporary directory which is then deleted. Try unpacking
the source tarball yourself, and then installing from the unpacked
directory, e.g. 

tar xfvz VBMix_0.2.17.tar.gz


> Thanks by advance,
> Pierrick
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel

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