go-delve/delve · error

invalid interface type: %v

Error message

invalid interface type: %v

What it means

Error "invalid interface type: %v" thrown in go-delve/delve.

Source

Thrown at pkg/proc/types.go:96

//     the name of the type, and then the type's name is used to look up
//     debug_info
//   - After go1.11 the runtimeTypeToDIE map is used to look up the address of
//     the type and map it directly to a DIE.
func RuntimeTypeToDIE(_type *Variable, dataAddr uint64, mds []ModuleData) (typ godwarf.Type, directIface bool, err error) {
	bi := _type.bi

	_type = _type.maybeDereference()

	// go 1.11 implementation: use extended attribute in debug_info

	md := findModuleDataForType(mds, _type.Addr)
	if md != nil {
		so := bi.moduleDataToImage(md)
		if so != nil {
			if rtdie, ok := so.runtimeTypeToDIE[_type.Addr-md.types]; ok {
				typ, err := godwarf.ReadType(so.dwarf, so.index, rtdie.offset, so.typeCache)
				if err != nil {
					return nil, false, fmt.Errorf("invalid interface type: %v", err)
				}
				return typ, getRuntimeTypeDirect(_type), nil
			}
		}
	}

	return nil, false, errors.New("could not resolve interface type")
}

// resolveParametricType returns the real type of t if t is a parametric
// type, by reading the correct dictionary entry.
func resolveParametricType(bi *BinaryInfo, mem MemoryReadWriter, t godwarf.Type, dictAddr uint64) (godwarf.Type, error) {
	ptyp, _ := t.(*godwarf.ParametricType)
	if ptyp == nil {
		return t, nil
	}
	if dictAddr == 0 {
		return ptyp.TypedefType.Type, errors.New("parametric type without a dictionary")

View on GitHub (pinned to a23773e6c3)

When it happens

Trigger: Thrown at pkg/proc/types.go:96 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/589d543ffdc45a9b. Report an issue: GitHub.