On 02/18/13 15:32, Jakub Jelinek wrote:
Hi!

This accesses one past the last initialized argument.
Fixed thusly, bootstrapped/regtested on x86_64-linux and i686-linux, ok for
trunk?

2013-02-18  Jakub Jelinek  <ja...@redhat.com>

        PR tree-optimization/56381
        * tree-ssa-pre.c (create_expression_by_pieces): Fix up last argument
        to fold_build3.

        * g++.dg/opt/pr56381.C: New test.
OK.  Arguably this could have gone in under the obvious rule.

jeff

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