[Rd] R crash using Sys.which on Windows

Tobias Verbeke tobias.verbeke at openanalytics.eu
Tue May 6 20:28:54 CEST 2014

Dear list, 

When installing the latest version of Rtools ( into a path that contains more than 96 characters on Windows 7 64-bit,
e.g. into


and assuming that the Rtools bin paths have been appropriately added to the PATH environment variable as in 


the following call from RGui 64-bit (version 3.1.0) reproducibly causes R to crash:


Sys.which seems to use an internal function on Windows. Is this a known issue? 

Please let me know if I can provide any more relevant information.


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