CONTRIBUTING
author Durham Goode <durham@fb.com>
Wed, 15 Mar 2017 15:48:57 -0700
changeset 31454 a5bad127128d
parent 30084 a492610a2fc1
permissions -rw-r--r--
branchmap: handle nullrev in setcachedata 906be86990 recently changed to switch from: self._rbcrevs[rbcrevidx:rbcrevidx + _rbcrecsize] = rec to pack_into(_rbcrecfmt, self._rbcrevs, rbcrevidx, node, branchidx) This causes an exception if rbcrevidx is -1 (i.e. the nullrev). The old code handled this because python handles out of bound sets to arrays gracefully. The new code throws because the self._rbcrevs buffer isn't long enough to write 8 bytes to. Normally it would've been resized by the immediately preceding line, but because the 0 length buffer is greater than the idx (-1) times the size, no resize happens. Setting the branch for the nullrev doesn't make sense anyway, so let's skip it. This was caught by external tests in the Facebook extensions repo, but I've added a test here that catches the issue.
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Our full contribution guidelines are in our wiki, please see:
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https://www.mercurial-scm.org/wiki/ContributingChanges
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If you just want a checklist to follow, you can go straight to
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https://www.mercurial-scm.org/wiki/ContributingChanges#Submission_checklist
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If you can't run the entire testsuite for some reason (it can be
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difficult on Windows), please at least run `contrib/check-code.py` on
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any files you've modified and run `python contrib/check-commit` on any
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commits you've made (for example, `python contrib/check-commit
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273ce12ad8f1` will report some style violations on a very old commit).