go-delve/delve · error

no threads found in core file

Error message

no threads found in core file

What it means

Error "no threads found in core file" thrown in go-delve/delve.

Source

Thrown at pkg/proc/core/core.go:15

package core

import (
	"errors"
	"fmt"
	"io"

	"github.com/go-delve/delve/pkg/dwarf/op"
	"github.com/go-delve/delve/pkg/elfwriter"
	"github.com/go-delve/delve/pkg/proc"
	"github.com/go-delve/delve/pkg/proc/internal/ebpf"
)

// ErrNoThreads core file did not contain any threads.
var ErrNoThreads = errors.New("no threads found in core file")

// A SplicedMemory represents a memory space formed from multiple regions,
// each of which may override previously regions. For example, in the following
// core, the program text was loaded at 0x400000:
// Start               End                 Page Offset
// 0x0000000000400000  0x000000000044f000  0x0000000000000000
// but then it's partially overwritten with an RW mapping whose data is stored
// in the core file:
//
//	Type           Offset             VirtAddr           PhysAddr
//	               FileSiz            MemSiz              Flags  Align
//	LOAD           0x0000000000004000 0x000000000049a000 0x0000000000000000
//	               0x0000000000002000 0x0000000000002000  RW     1000
//
// This can be represented in a SplicedMemory by adding the original region,
// then putting the RW mapping on top of it.
type SplicedMemory struct {
	readers []readerEntry

View on GitHub (pinned to a23773e6c3)

When it happens

Trigger: Thrown at pkg/proc/core/core.go:15 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/3122db9271886855. Report an issue: GitHub.