master update for 1.84. #346
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Using boost::throw_exception allows for modifications to these exceptions on a per-application basis, including overriding with custom implementations. This also has the benefit of allowing compilation with -fno-exceptions set, which should make this code more portable.
closes #256
* Fix V2::EXT::CWD [SunOS]
filesystem::canonical is basically the same thing as realpath on Unix-likes, which only resolves one symbolic link. If one symbolic link points to yet another symbolic link and so on and so forth, it will not resolve all symbolic links. It will only do one link for each call to canonical. On SunOS, unlike Linux, /proc/${pid}/cwd does not directly point to the literal current working directory of the given ${pid}. Instead, it will point to yet another symlink - /proc/${pid}/path/cwd which once you have followed that second link only then will you have the literal cwd path for the process id.
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