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fix: check if at genesis when testing for expensive forks in Call

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Otherwise, we could try to lookup the parent of the block at height 0.
This commit is contained in:
Steven Allen 2021-08-30 16:23:13 -07:00
parent e6902304d5
commit 08207912a5
1 changed files with 4 additions and 1 deletions
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5
chain/stmgr/call.go
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@ -49,7 +49,7 @@ func (sm *StateManager) Call(ctx context.Context, msg *types.Message, ts *types.
} }
ts = pts ts = pts
} }
} else { } else if ts.Height() > 0 {
pts, err := sm.cs.LoadTipSet(ts.Parents()) pts, err := sm.cs.LoadTipSet(ts.Parents())
if err != nil { if err != nil {
return nil, xerrors.Errorf("failed to load parent tipset: %w", err) return nil, xerrors.Errorf("failed to load parent tipset: %w", err)
@ -58,6 +58,9 @@ func (sm *StateManager) Call(ctx context.Context, msg *types.Message, ts *types.
if sm.hasExpensiveFork(pheight) { if sm.hasExpensiveFork(pheight) {
return nil, ErrExpensiveFork return nil, ErrExpensiveFork
} }
} else {
// We can't get the parent tipset in this case.
pheight = ts.Height() - 1
} }
bstate := ts.ParentState() bstate := ts.ParentState()