go-delve/delve · error · errTracebackAncestorsDisabled

tracebackancestors is disabled

Error message

tracebackancestors is disabled

What it means

Error "tracebackancestors is disabled" thrown in go-delve/delve.

Source

Thrown at pkg/proc/variables.go:1049

	if v.Unreadable != nil {
		return nil
	}
	return v
}

func (v *Variable) fieldVariable(name string) *Variable {
	if !v.loaded {
		panic("fieldVariable called on a variable that wasn't loaded")
	}
	for i := range v.Children {
		if child := &v.Children[i]; child.Name == name {
			return child
		}
	}
	return nil
}

var errTracebackAncestorsDisabled = errors.New("tracebackancestors is disabled")

// Ancestors returns the list of ancestors for g.
func Ancestors(p *Target, g *G, n int) ([]Ancestor, error) {
	scope := globalScope(p, p.BinInfo(), p.BinInfo().Images[0], p.Memory())
	tbav, err := scope.EvalExpression("runtime.debug.tracebackancestors", loadSingleValue)
	if err == nil && tbav.Unreadable == nil && tbav.Kind == reflect.Int {
		tba, _ := constant.Int64Val(tbav.Value)
		if tba == 0 {
			return nil, errTracebackAncestorsDisabled
		}
	}

	av, err := g.variable.structField("ancestors")
	if err != nil {
		return nil, err
	}
	av = av.maybeDereference()
	av.loadValue(LoadConfig{MaxArrayValues: n, MaxVariableRecurse: 1, MaxStructFields: -1})

View on GitHub (pinned to a23773e6c3)

When it happens

Trigger: Thrown at pkg/proc/variables.go:1049 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of go-delve/delve@a23773e6c3 (2026-08-31). Data as JSON: /api/errors/49b838b572a10cd7. Report an issue: GitHub.