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.