Wrong int results with project

The following produces junk output in the B column:

  set v [view {A B:I} mdef | data {a bb ccc} {1 22 333}]
  view $v project {B A} | get

But it works if B is defined as :S.

Summary

Nasty one. If the first column was a 32-bit int col, no copy was made for hash column calculation, and then for any remaining columns that original contents would be overwritten with xor-ed hash values. This "optimization" in HashCol code has been removed.