# HG changeset patch
# User Mads Kiilerich <mads@kiilerich.com>
# Date 2018-10-29 01:20:21
# Node ID 6834e12654156a1429d2cccfa22416da61c502eb
# Parent  b2c15f308ad23433f7eb08f79e7153ca96e6687f

graph: don't try to get obsolete status for fake parent revisions

Fake parents use negative revision numbers as internal placeholders.
Previous Mercurial versions could handle negative non-existing revision
numbers, but Mercurial 4.8 will fail on this invalid input when getting the
obsolete status.
Instead, make sure we only get obsolete status for actual revisions.

diff --git a/kallithea/lib/graphmod.py b/kallithea/lib/graphmod.py
--- a/kallithea/lib/graphmod.py
+++ b/kallithea/lib/graphmod.py
@@ -149,7 +149,7 @@ def _colored(repo, dag):
             b = branch(rev)
             searching = True
             for p in reversed(addparents):
-                obs[p] = int(repo[p].obsolete)
+                obs[p] = int(repo[p].obsolete) if p >= 0 else 0
                 if searching and branch(abs(p)) in [b, None]:
                     # This is the first parent on the same branch - inherit the color
                     colors[p] = color