Possible overflow in Partitioner dotnet/corefx#40201 (dotnet/corefx#41066)
* Possible overflow in Partitioner dotnet/corefx#40201
https://github.com/dotnet/corefx/issues/40201
* Possible overflow in Partitioner dotnet/corefx#40201
https://github.com/dotnet/corefx/issues/40201
* Possible overflow in Partitioner dotnet/corefx#40201
https://github.com/dotnet/corefx/issues/40201
* Possible overflow in Partitioner dotnet/corefx#40201
https://github.com/dotnet/corefx/issues/40201
* Possible overflow in Partitioner dotnet/corefx#40201
https://github.com/dotnet/corefx/issues/40201
Commit migrated from https://github.com/dotnet/corefx/commit/
36370ae660d385deef9c2dc25f72852bc4b9194e