2005-05-31  Andrew pinski  <pinskia@physics.uc.edu>

        PR middle-end/20931
        * g++.dg/opt/pr20931.C: New test.

2005-05-31  Andrew Pinski  <pinskia@physics.uc.edu>

        PR middle-end/20931
        PR middle-end/20946
        * fold-const.c (fold_checksum_tree): Copy types also if
        TYPE_CONTAINS_PLACEHOLDER_INTERNAL is set.
        Don't call fold_checksum_tree for TREE_LIST's TREE_CHAIN
        first.
        Tail recurse TREE_LIST's TREE_CHAIN.

From-SVN: r100397