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Re: [Lilypond-auto] Issue 2078 in lilypond: always-changing regtest: gra

From: lilypond
Subject: Re: [Lilypond-auto] Issue 2078 in lilypond: always-changing regtest: graphviz.log
Date: Mon, 21 May 2012 08:33:45 +0000

Comment #6 on issue 2078 by address@hidden: always-changing regtest: graphviz.log

Actually, no such luck: the graphviz changes apparently happen in connection with changes in input/regression. Since the lybook-testdb hashes are derived from file contents and the test runs are split according to alphabet IIRC, any change in tests is likely to result in different tests being run before the graphviz test.

So either some test causes permanent changes in data structures affecting the graphviz test (which would be a bug), or the graphviz test itself depends on the memory layout of its data (one conceivable cause would be use of hash-fold or similar routines depending on the traversal order of an eq-based hashtable).

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