[Rd] Assistance much appreciated

[Michael Felt]

More experimenting with calling commands:
 > tools:::foobar()
Error: Line starting 'Package: tools ...' is malformed!
 > tools::foobar()
Error: Line starting 'Package: tools ...' is malformed!
 > Tools:::foobar()
Error in loadNamespace(name) : there is no package called 'Tools'
 > loadNamespace(tools)
Error in loadNamespace(tools) : object 'tools' not found
 > loadNamespace("tools")
Error: Line starting 'Package: tools ...' is malformed!
 >


On 17-Dec-15 18:02, Michael Felt wrote:
> I have been struggling with this error message - and think I finally 
> understand it's context.
>
> Start
>
> Line by line debugging shows me the function works:
>
> ...
> > saveRDS(val, mapfile)
> > val
> $variables
> $variables$IANA_HTTP_status_code_db
> [1]    0 1256
>
> $variables$IANA_URI_scheme_db
> [1] 1256 3458
>
> $variables$table_of_HTTP_status_codes
> [1] 4714  830
>
>
> $references
> named list()
>
> $compressed
> [1] TRUE
>
> > mapfile
> [1] "./library/tools/R/sysdata.rdx"
> > [1] + Stopped (SIGTSTP)         R_DEFAULT_PACKAGES=NULL LC_ALL=C 
> ./bin/R --vanilla
> root at x065:[/data/prj/cran/64/R-3.2.3]ls -l ./library/tools/R/sysdata.rdx
> -rw-r--r--   1 root     33              193 Dec 17 16:49 
> ./library/tools/R/sysdata.rdx
> root at x065:[/data/prj/cran/64/R-3.2.3]cat ./library/tools/R/sysdata.rdx
> àb```b`fbf" SH0#h^°<°¼@ðAlÞ&_(
>                               ¨Ü(RËÈÀÂÀ        ¤YósS
> C7ÈPG3@Áøj/D                                        °aA 
> OG?ÇxøâÄÒâøäüÔø$¨¼X>4È3¾89#5IFª$1)'5>?
> ì00F¹³,±(dA1T«(5-µ(5/![PZ\2í$Ú<root at x065:[/data/prj/cran/64/R-3.2.3]
> root at x065:[/data/prj/cran/64/R-3.2.3]
> root at x065:[/data/prj/cran/64/R-3.2.3]gzip -dc 
> ./library/tools/R/sysdata.rdx
> X
> j>      names   IANA_HTTP_status_code_db IANA_URI_scheme_db      
> table_of_HTTP_status_codesþÿþ
> ÿ               variables
> references
> compressedþroot at x065:[/data/prj/cran/64/R-3.2.3]fg
>  R_DEFAULT_PACKAGES=NULL LC_ALL=C ./bin/R --vanilla
>
> >
> > e
> <environment: 110dbf620>
> > destDir
> [1] "./library/tools/R"
> > compress
> [1] TRUE
> > debug(tools:::makeLazyLoadDB(e, file.path(destDir, "sysdata"), 
> compress = compress))
> Error: Line starting 'Package: tools ...' is malformed!
> > tools:::makeLazyLoadDB(e, file.path(destDir, "sysdata"), compress = 
> compress)
> Error: Line starting 'Package: tools ...' is malformed!
> >
>
> So, at the end - my gut-feeling is that the error messages is not 
> about the arguments, but us related to the "tools:::foo".
>
> Where should I look next? It goes a bit beyond me to know where in R 
> "tools:::foo" is being parsed.
> Guessing here - but might be related to the switch from 32-bit to 
> 64-bit AND that PowerPC is BigEndian rather than LittleEndian? Could 
> also be absolutely wrong, way off base, etc. --> shoot me down!
>
> Thanks,
> Michael