Mercurial > hg-stable
changeset 40976:2e305e54eae3
sparse-revlog: protect C code against delta chain including nullrev
For unclear reasons, some repositories include nullrev (-1). Re-computing
delta for such repo remove nullrev from all chain, so some older versions have
been creating them.
This currently raise an IndexError with the new C code doing chain slicing as
it expect all item to be positive.
Both python and C code for reading delta chain preserve nullrev, and the Python
code for chain slicing handle the case fine. So we take the safe route and make
the new C code works fine in that case.
| author | Boris Feld <boris.feld@octobus.net> |
|---|---|
| date | Fri, 14 Dec 2018 17:25:41 +0100 |
| parents | c6939b353ebd |
| children | 98a0fbda8739 |
| files | mercurial/cext/revlog.c |
| diffstat | 1 files changed, 1 insertions(+), 1 deletions(-) [+] |
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--- a/mercurial/cext/revlog.c Fri Dec 14 17:24:44 2018 +0100 +++ b/mercurial/cext/revlog.c Fri Dec 14 17:25:41 2018 +0100 @@ -1229,7 +1229,7 @@ if (revnum == -1 && PyErr_Occurred()) { goto bail; } - if (revnum < 0 || revnum >= idxlen) { + if (revnum < nullrev || revnum >= idxlen) { PyErr_Format(PyExc_IndexError, "index out of range: %zd", revnum); goto bail;