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adjust checks for core to better match c++ checks #1632

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Commits on Feb 9, 2024

  1. adjust checks for core to better match c++ checks

    The core checks were not setting the same image / tile size limits and
    not disabling reads at quite the same level.
    
    Note: the core check does not read the entire image into a contiguous
    slice, so does not replicate the maximum deep sample checks in the same
    way, this is a source of potential false-negative failures
    
    This should address OSS-Fuzz 66491 and 66489 (different forms of the
    same failure where a large sample size allocation was happening), and
    are only constrained memory (2.5Gb) issues.
    
    Signed-off-by: Kimball Thurston <kdt3rd@gmail.com>
    kdt3rd committed Feb 9, 2024
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