Debugger stops at breakpoint in a loop only once (Windows Arm64)

[sergunya]

1. dlv version

Delve Debugger
Version: 1.9.1
Build: $Id: d81b9fd12bfa603f3cf7a4bc842398bd61c42940 $

2. go version
go version go1.19.3 windows/arm64

3. Operating system and processor architecture

Edition	       Windows 11 Pro
Version	       22H2
OS build	       22621.521
System type  64-bit operating system, ARM-based processor

6. Steps to reproduce

• Install delve for Windows arm64 go install -tags exp.winarm64 github.com/go-delve/delve/cmd/dlv

• Create sample.go file with the outlined below content
  `package main

  import (
  "fmt"
  )

  func main() {
  length, capacity, y := 1000, 2000, 3
  AllResults := make([]int, length, capacity)
  for i := 0; i < length; i++ {
  result := i / y // Hi there
  fmt.Println(result)
  AllResults[i] = result
  }
  j := 0
  fmt.Println(j)
  }`

• Start debug client: dlv debug sample.go

• Add breakpoint inside loop: (dlv) break sample.go:12

• Continue debug session (dlv) continue (debugger stops at breakpoint)

• Continue debug session further (dlv) continue

7. Expected result
The debugger stops at the breakpoint in every cycle in a loop.

8. Actual result
The debugger stops at the breakpoint only in first cycle of the loop.

[aarzilli]

cc @qmuntal

[sergunya]

Also step action doesn't work. Should I create a separate issue or we can continue with this ticket?

[aarzilli]

I think it's fine to continue here.

[qmuntal]

Thanks for reporting this issue. I'll investigate it next week.

[qmuntal]

Which version of go are you using @sergunya? Can't reproduce this issue with go version go1.19.2 windows/arm64.

[sergunya]

@qmuntal hey,
go version go1.19.3 windows/arm64

[qmuntal]

I'm afraid I can't reproduce this locally. I do have an OS build slightly newer than yours (22621.819), but I doubt it matters here.

[soerennielsen]

Delve version 1.24 (with exp. flag set), Go 1.23, Windows 11 24H2 Arm64.

Time has passed, now it works excellent, stops in the loop everytime. Tested in vs code, not command line though.

Thanks for the install command line :-)