--- lib/Support/Unix/Path.inc.orig +++ lib/Support/Unix/Path.inc @@ -342,14 +342,15 @@ #if defined(HAVE_POSIX_FALLOCATE) // If we have posix_fallocate use it. Unlike ftruncate it always allocates // space, so we get an error if the disk is full. - if (int Err = ::posix_fallocate(FD, 0, Size)) - return std::error_code(Err, std::generic_category()); -#else + if (int Err = ::posix_fallocate(FD, 0, Size)) { + if (Err != EINVAL && Err != EOPNOTSUPP) + return std::error_code(Err, std::generic_category()); + } +#endif // Use ftruncate as a fallback. It may or may not allocate space. At least on // OS X with HFS+ it does. if (::ftruncate(FD, Size) == -1) return std::error_code(errno, std::generic_category()); -#endif return std::error_code(); }