Tom Lane <> schrieb:

>Boszormenyi Zoltan <> writes:
>> Then, why isn't memcpy() skipped if the source and dest are the same?
>> It would be a micro-optimization but a valid one.
>No, it'd be more like a micro-pessimization, because the test would be
>wasted effort in the vast majority of calls.  The *only* reason to do
>this would be to shut up valgrind, and that seems annoying.
>I wonder if anyone's tried filing a bug against valgrind to say that it
>shouldn't complain about this case.

You already need a suppression file to use valgrind sensibly, its easy enough 
to add it there. Perhaps we should add one to the tree?

Please excuse brevity and formatting - I am writing this on my mobile phone.

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