无法在 macOS 上打印上一个堆栈帧中的变量
- What version of Delve are you using (
dlv version)? Delve Debugger Version: 1.21.0 Build: e0b4bfbed31daef19c8b98ff2d9a2e2717c69dd8 - What version of Go are you using? (
go version)? go version go1.21.1 darwin/arm64 - What operating system and processor architecture are you using? darwin/arm64
- What did you do? Given the following: count.go: package count import ( "io" "os" "strings" ) // Job is a single job to be performed. type Job struct { url string } // ParseURLsFromFile takes a path to a text file containing // newline delimited URLs and parses them into Job structs // which can be passed to workers. func ParseURLsFromFile(path string) ([]*Job, error) { f, err := os.Open(path) if err != nil { return nil, err } defer f.Close()
b, err := io.ReadAll(f) if err != nil { return nil, err } list := string(b) urls := strings.Split(list, "\n")
jobs := make([]*Job, len(urls))
for , url := range urls {
jobs = append(jobs, &Job{url: url})
}
return jobs, nil
}
count_test.go:
package count
import (
"fmt"
"testing"
"GitHub.com/stretchr/testify/assert"
)
func TestParseURLsFromFile(t *testing.T) {
jobs, err := ParseURLsFromFile("./testdata/urls.txt")
assert.Nil(t, err)
fmt.Printf("%#v\n", jobs)
assert.Equal(t, "http://google.com", jobs[0].url)
assert.Equal(t, "http://yahoo.com", jobs[1].url)
assert.Equal(t, "http://go.dev", jobs[2].url)
}
Run with dlv test and then continue until panic.
Execute frame 7 print jobs
5. What did you expect to see?
The jobs variable printed with correct values, cap and len information.
6. What did you see instead?
(dlv) frame 7 print jobs
[]*gc2023/count.Job len: 4302113844, cap: 1374390496832, [
{url: (unreadable could not read string at 0x0 due to protocol error E08 during memory read for packet $m0,40)},
{url: (unreadable invalid length: -6188504560871472192)},
{}, {}, {}, {}, {
url: "��\x7f���\x00��\x03��\x03\x1e�j������\x17\x11\x02@���\x00��\x02\x11�!��T�#\x00�\x14\x02\x00����\x17\x00\x00\x00\x00�\v@��c0�...+1374390071228 more",},
{url: (unreadable invalid length: -7494520139350540287)},
{url: "�\v@��c0��\x02\x00T�\x0f\x1c���\x1f��#\x00�@\a@��\x17\x00�\x1b\x00�9\x02�@��\x13\x00�B\x00\x00�\x06\x00\x00\x14\x1b\x00�9�\x1b\x00��\x03\x1f�...+1374390071244 more",},
{}, {}, {}, {}, {}, {}, {
url: "��\x7f���\x00��\x03_��\x03\x1e�j������\x17\x11\x02@���\x00��\x02\x11�!��T�#\x00�\x14\x02\x00����\x17\x00\x00\x00\x00�\v@��c0�...+1374390071228 more",},
{url: (unreadable invalid length: -6265210773073559551)},
{url: "�\v@���\n�?\x02\x10�IE\x00T��\fѝ�?��\x02\x00��#\x00�@\a@��[\x00�\x1b\x00�9��\x00�l����\x1f\x019@\x00\x007\x06\x00\x00\x14...+1374390071246 more",},
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内容来源: go-delve/delve