*What version of Go are you using (go version)?*
1.9.3~latest version
*What operating system and processor architecture are you using?*
x86-64
*What did you do?*
test runtime.Callers function in a panic process, test code as below:
package main
import (
"fmt"
"runtime"
)
func test() {
var zero = 0
_ = 1/zero
}
func Stack() {
var pc [16]uintptr
n := runtime.Callers(0, pc[:])
fmt.Println(n,pc)
callers := pc[:n]
frames := runtime.CallersFrames(callers) //use CallersFrames
for {
frame, ok := frames.Next()
if !ok {
break
}
fmt.Printf("%s %s %d\n", frame.Func.Name(), frame.File, frame.Line)
}
fmt.Println("============================")
var name, file string
var line int
for _, pc := range pc[:n] {
fn := runtime.FuncForPC(pc) ////use FuncForPC
if fn == nil {
fmt.Println("fn = nil")
continue
}
file, line = fn.FileLine(pc)
name = fn.Name()
fmt.Printf("%s %s %d\n", name, file, line)
}
}
func main() {
defer func(){
if err:=recover();err!=nil{
Stack()
///mt.Println()
}
}()
test()
}
*What did you expect to see?*
all stack dispalyed,like:
*What did you see instead?*
miss some function missing.
9 [163520 878784 880704 556224 329504 323712 880512 341920 564417 0 0 0 0 0 0 0]
runtime.Callers /usr/local/go/src/runtime/extern.go 218
main.Stack /tmp/sandbox512058979/main.go 16
main.main.func1 /tmp/sandbox512058979/main.go 47
runtime.call16 /usr/local/go/src/runtime/asm_amd64p32.s 392
runtime.gopanic /usr/local/go/src/runtime/panic.go 513
runtime.panicdivide /usr/local/go/src/runtime/panic.go 61
/tmp/sandbox512058979/main.go 10 --------- use
CallerFrames miss function name
main.main /tmp/sandbox512058979/main.go 52
runtime.main /usr/local/go/src/runtime/proc.go 201
============================
runtime.Callers /usr/local/go/src/runtime/extern.go 218
main.Stack /tmp/sandbox512058979/main.go 16
main.main.func1 /tmp/sandbox512058979/main.go 47
runtime.call16 /usr/local/go/src/runtime/asm_amd64p32.s 392
runtime.gopanic /usr/local/go/src/runtime/panic.go 514
runtime.panicdivide /usr/local/go/src/runtime/panic.go 61main.main
/tmp/sandbox512058979/main.go 10 ---------- use FuncForPC
miss stack main.test, and this line number is wrong
runtime.main /usr/local/go/src/runtime/proc.go 210
runtime.goexit /usr/local/go/src/runtime/asm_amd64p32.s 524
*when i run program in debug mod, the result is OK.*
10 [4223048 4818604 4821394 4518130 4363057 4358245 4818349
4821271 4370786 4527169 0 0 0 0 0 0]
runtime.Callers D:/Go/src/runtime/extern.go 212
main.Stack E:/Git/UDM/MicroServices/GoService/src/testactor/main.go 16
main.main.func1 E:/Git/UDM/MicroServices/GoService/src/testactor/main.go 47
runtime.call32 D:/Go/src/runtime/asm_amd64.s 509
runtime.gopanic D:/Go/src/runtime/panic.go 491
runtime.panicdivide D:/Go/src/runtime/panic.go 42
main.test E:/Git/UDM/MicroServices/GoService/src/testactor/main.go 10
main.main E:/Git/UDM/MicroServices/GoService/src/testactor/main.go 52
runtime.main D:/Go/src/runtime/proc.go 195
============================
runtime.Callers D:/Go/src/runtime/extern.go 212
main.Stack E:/Git/UDM/MicroServices/GoService/src/testactor/main.go 16
main.main.func1 E:/Git/UDM/MicroServices/GoService/src/testactor/main.go 46
runtime.call32 D:/Go/src/runtime/asm_amd64.s 509
runtime.gopanic D:/Go/src/runtime/panic.go 492
runtime.panicdivide D:/Go/src/runtime/panic.go 42
main.test E:/Git/UDM/MicroServices/GoService/src/testactor/main.go 10
main.main E:/Git/UDM/MicroServices/GoService/src/testactor/main.go 53
runtime.main D:/Go/src/runtime/proc.go 204
runtime.goexit D:/Go/src/runtime/asm_amd64.s 2338
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