https://bugs.kde.org/show_bug.cgi?id=387766

Ivo Raisr <iv...@ivosh.net> changed:

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                 CC|                            |iv...@ivosh.net

--- Comment #2 from Ivo Raisr <iv...@ivosh.net> ---
(In reply to Markus Trippelsdorf from comment #0)
> Running gcc trunk under valgrind produces many false positives, e.g.:

Please provide a simple standalone reproducer. For example, could a part of
update_costs_from_copies() be isolated to reproduce the problem?

There is also a patch for Valgrind which makes it to spend some extra time to
accurately track definedness:
https://bugs.kde.org/show_bug.cgi?id=387664

Please could you try to build Valgrind with this patch and then run it with
--expensive-definedness-checks=yes (or --expensive-definedness-checks=auto).

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