On 10 December 2015 at 19:14, Julian Foad <julianf...@apache.org> wrote: > APR devs, Subversion devs: > > On Subversion's Mac OS buildbots it appears that apr_hash_overlay() > sometimes returns a hash containing duplicate keys, which (as I > understand it) should be impossible. > > We had an issue where some 'svnmover' tests were failing only on Mac > OS buildbots. I added some debugging in Subversion commits r1719056, > r1719067, r1719072, r1719074. > > Buildbot result: > > https://ci.apache.org/builders/svn-x64-macosx-bdb/builds/485/steps/Test%20ra_svn%2Bbdb > --> debug output in 'faillog' shows duplicate keys in hash: > "union_children={A, iota, foo, boozle, boozle, iota}" > > I replaced apr_hash_overlay() with my own simple re-implementation: > > http://svn.apache.org/r1719089 -- re-implement hash overlay > Hi Julian,
That could be possible if two hashes uses different hash functions. This could happen if you're using svn_hash__make() directly or indirectly: for example RA get_dirent for svn:// protocol returns hash with non-standard hash-function. -- Ivan Zhakov