thodg/libgit2/tests/odb/backend

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  • Hash : 275f103d
    Author : Patrick Steinhardt
    Date : 2018-01-12T08:59:40 

    odb: reject reading and writing null OIDs

The null OID (hash with all zeroes) indicates a missing object in
upstream git and is thus not a valid object ID. Add defensive
measurements to avoid writing such a hash to the object database in the
very unlikely case where some data results in the null OID. Furthermore,
add shortcuts when reading the null OID from the ODB to avoid ever
returning an object when a faulty repository may contain the null OID.

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