If it is unable to find the APPDATA or HOME env var, it returns a nullptr. appdata_path then tries to use this nullptr to build a string. Updated appdata_path to log an error if a nullptr is returned.
(Context: ran into an issue with this while using LightGBM where the program was unexpectedly crashing without any error due to $HOME not being set.)
At present, there is no check to ensure
std::getenvhas returned a non-null value in [detail::getenv]()https://github.com/boostorg/compute/blob/36350b7de849300bd3d72a05d8bf890ca405a014/include/boost/compute/detail/getenv.hpp#L26.If it is unable to find the APPDATA or HOME env var, it returns a nullptr.
appdata_paththen tries to use this nullptr to build a string. Updated appdata_path to log an error if a nullptr is returned.(Context: ran into an issue with this while using LightGBM where the program was unexpectedly crashing without any error due to $HOME not being set.)