runtime: goroutine stack exceeds 1000000000-byte limit in simple task

[Noname-noragami]

What version of Go are you using (go version)?

$ go version 1.13

Does this issue reproduce with the latest release?

What operating system and processor architecture are you using (go env)?

go env Output

$ go env 

What did you do?

package main
import "fmt"

type object interface{
have()
}

type person struct{
name string
year int
}
type car struct{
id int
color string
grade float64
}

func (p person) have(){
fmt.Println("My name is:", p.name)
}
func(c car) have(){
fmt.Println("The car id is: ", c.id)
}
type bitch struct{
phoneNum int
r relateF
}
type relateF struct{
handle int
grade float64
name string
}
func(b bitch) Float64() float64{
o := float64(b.phoneNum)+1.25
return o
}

func(b bitch) String() string{
fmt.Println(b)//old
return fmt.Sprintf(b.r.name)
}

func foo(o object){
fmt.Println(o);
}

func main(){
p1 := person{"King" ,99}
p2 := person{name:"Queen",year:100}
c1 := car{1,"White",8.2}
foo(p1)
foo(p2)
foo(c1)
p1.have()
p2.have()
c1.have()
b1:= bitch{456,relateF{5,48.2,"Elsa"}}
fmt.Println(b1.Float64())
fmt.Println(b1)
}

What did you expect to see?

RUN

What did you see instead?

{King 99}
{Queen 100}
{1 White 8.2}
My name is: King
My name is: Queen
The car id is: 1
457.25
runtime: goroutine stack exceeds 1000000000-byte limit
fatal error: stack overflow
runtime stack:
runtime.throw(0x4d1b20, 0xe)
F:/Go/src/runtime/panic.go:774 +0x79
runtime.newstack()
F:/Go/src/runtime/stack.go:1046 +0x6f7
runtime.morestack()
F:/Go/src/runtime/asm_amd64.s:449 +0x97

goroutine 1 [running]:
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc0200753d8)
D:/go/structAIntefaceExp.go:38 +0x115 fp=0xc020075378 sp=0xc020075370 pc=0x498a75
main.(*bitch).String(0xc00cbc3350, 0x4beb80, 0xc00cbc3350)
:1 +0x77 fp=0xc0200753e8 sp=0xc020075378 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc8410, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc0200755f8 sp=0xc0200753e8 pc=0x493399
fmt.(*pp).printArg(0xc00cbc8410, 0x4beb80, 0xc00cbc3350, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc020075690 sp=0xc0200755f8 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc8410, 0xc0200757a8, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc020075700 sp=0xc020075690 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc0200757a8, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc020075768 sp=0xc020075700 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020075850)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc0200757f0 sp=0xc020075768 pc=0x498a1d
main.(*bitch).String(0xc00cbc3320, 0x4beb80, 0xc00cbc3320)
:1 +0x77 fp=0xc020075860 sp=0xc0200757f0 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc8340, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc020075a70 sp=0xc020075860 pc=0x493399
fmt.(*pp).printArg(0xc00cbc8340, 0x4beb80, 0xc00cbc3320, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc020075b08 sp=0xc020075a70 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc8340, 0xc020075c20, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc020075b78 sp=0xc020075b08 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc020075c20, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc020075be0 sp=0xc020075b78 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020075cc8)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc020075c68 sp=0xc020075be0 pc=0x498a1d
main.(*bitch).String(0xc00cbc32f0, 0x4beb80, 0xc00cbc32f0)
:1 +0x77 fp=0xc020075cd8 sp=0xc020075c68 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc8270, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc020075ee8 sp=0xc020075cd8 pc=0x493399
fmt.(*pp).printArg(0xc00cbc8270, 0x4beb80, 0xc00cbc32f0, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc020075f80 sp=0xc020075ee8 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc8270, 0xc020076098, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc020075ff0 sp=0xc020075f80 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc020076098, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc020076058 sp=0xc020075ff0 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020076140)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc0200760e0 sp=0xc020076058 pc=0x498a1d
main.(*bitch).String(0xc00cbc32c0, 0x4beb80, 0xc00cbc32c0)
:1 +0x77 fp=0xc020076150 sp=0xc0200760e0 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc81a0, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc020076360 sp=0xc020076150 pc=0x493399
fmt.(*pp).printArg(0xc00cbc81a0, 0x4beb80, 0xc00cbc32c0, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc0200763f8 sp=0xc020076360 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc81a0, 0xc020076510, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc020076468 sp=0xc0200763f8 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc020076510, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc0200764d0 sp=0xc020076468 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc0200765b8)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc020076558 sp=0xc0200764d0 pc=0x498a1d
main.(*bitch).String(0xc00cbc3290, 0x4beb80, 0xc00cbc3290)
:1 +0x77 fp=0xc0200765c8 sp=0xc020076558 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc80d0, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc0200767d8 sp=0xc0200765c8 pc=0x493399
fmt.(*pp).printArg(0xc00cbc80d0, 0x4beb80, 0xc00cbc3290, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc020076870 sp=0xc0200767d8 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc80d0, 0xc020076988, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc0200768e0 sp=0xc020076870 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc020076988, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc020076948 sp=0xc0200768e0 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020076a30)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc0200769d0 sp=0xc020076948 pc=0x498a1d
main.(*bitch).String(0xc00cbc3260, 0x4beb80, 0xc00cbc3260)
:1 +0x77 fp=0xc020076a40 sp=0xc0200769d0 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc8000, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc020076c50 sp=0xc020076a40 pc=0x493399
fmt.(*pp).printArg(0xc00cbc8000, 0x4beb80, 0xc00cbc3260, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc020076ce8 sp=0xc020076c50 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc8000, 0xc020076e00, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc020076d58 sp=0xc020076ce8 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc020076e00, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc020076dc0 sp=0xc020076d58 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020076ea8)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc020076e48 sp=0xc020076dc0 pc=0x498a1d
main.(*bitch).String(0xc00cbc3230, 0x4beb80, 0xc00cbc3230)
:1 +0x77 fp=0xc020076eb8 sp=0xc020076e48 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc7ee0, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc0200770c8 sp=0xc020076eb8 pc=0x493399
fmt.(*pp).printArg(0xc00cbc7ee0, 0x4beb80, 0xc00cbc3230, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc020077160 sp=0xc0200770c8 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc7ee0, 0xc020077278, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc0200771d0 sp=0xc020077160 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc020077278, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc020077238 sp=0xc0200771d0 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020077320)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc0200772c0 sp=0xc020077238 pc=0x498a1d
main.(*bitch).String(0xc00cbc3200, 0x4beb80, 0xc00cbc3200)
:1 +0x77 fp=0xc020077330 sp=0xc0200772c0 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc7e10, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc020077540 sp=0xc020077330 pc=0x493399
fmt.(*pp).printArg(0xc00cbc7e10, 0x4beb80, 0xc00cbc3200, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc0200775d8 sp=0xc020077540 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc7e10, 0xc0200776f0, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc020077648 sp=0xc0200775d8 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc0200776f0, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc0200776b0 sp=0xc020077648 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020077798)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc020077738 sp=0xc0200776b0 pc=0x498a1d
main.(*bitch).String(0xc00cbc31d0, 0x4beb80, 0xc00cbc31d0)
:1 +0x77 fp=0xc0200777a8 sp=0xc020077738 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc7d40, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc0200779b8 sp=0xc0200777a8 pc=0x493399
fmt.(*pp).printArg(0xc00cbc7d40, 0x4beb80, 0xc00cbc31d0, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc020077a50 sp=0xc0200779b8 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc7d40, 0xc020077b68, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc020077ac0 sp=0xc020077a50 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc020077b68, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc020077b28 sp=0xc020077ac0 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020077c10)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc020077bb0 sp=0xc020077b28 pc=0x498a1d
main.(*bitch).String(0xc00cbc31a0, 0x4beb80, 0xc00cbc31a0)
:1 +0x77 fp=0xc020077c20 sp=0xc020077bb0 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc7c70, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc020077e30 sp=0xc020077c20 pc=0x493399
fmt.(*pp).printArg(0xc00cbc7c70, 0x4beb80, 0xc00cbc31a0, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc020077ec8 sp=0xc020077e30 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc7c70, 0xc020077fe0, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc020077f38 sp=0xc020077ec8 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc020077fe0, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc020077fa0 sp=0xc020077f38 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020078088)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc020078028 sp=0xc020077fa0 pc=0x498a1d
main.(*bitch).String(0xc00cbc3170, 0x4beb80, 0xc00cbc3170)
:1 +0x77 fp=0xc020078098 sp=0xc020078028 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc7ba0, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc0200782a8 sp=0xc020078098 pc=0x493399
fmt.(*pp).printArg(0xc00cbc7ba0, 0x4beb80, 0xc00cbc3170, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc020078340 sp=0xc0200782a8 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc7ba0, 0xc020078458, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc0200783b0 sp=0xc020078340 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc020078458, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc020078418 sp=0xc0200783b0 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020078500)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc0200784a0 sp=0xc020078418 pc=0x498a1d
main.(*bitch).String(0xc00cbc3140, 0x4beb80, 0xc00cbc3140)
:1 +0x77 fp=0xc020078510 sp=0xc0200784a0 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc7ad0, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc020078720 sp=0xc020078510 pc=0x493399
fmt.(*pp).printArg(0xc00cbc7ad0, 0x4beb80, 0xc00cbc3140, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc0200787b8 sp=0xc020078720 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc7ad0, 0xc0200788d0, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc020078828 sp=0xc0200787b8 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc0200788d0, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc020078890 sp=0xc020078828 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020078978)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc020078918 sp=0xc020078890 pc=0x498a1d
main.(*bitch).String(0xc00cbc3110, 0x4beb80, 0xc00cbc3110)
:1 +0x77 fp=0xc020078988 sp=0xc020078918 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc7a00, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc020078b98 sp=0xc020078988 pc=0x493399
fmt.(*pp).printArg(0xc00cbc7a00, 0x4beb80, 0xc00cbc3110, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc020078c30 sp=0xc020078b98 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc7a00, 0xc020078d48, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc020078ca0 sp=0xc020078c30 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc020078d48, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc020078d08 sp=0xc020078ca0 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020078df0)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc020078d90 sp=0xc020078d08 pc=0x498a1d
main.(*bitch).String(0xc00cbc30e0, 0x4beb80, 0xc00cbc30e0)
:1 +0x77 fp=0xc020078e00 sp=0xc020078d90 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc7930, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc020079010 sp=0xc020078e00 pc=0x493399
fmt.(*pp).printArg(0xc00cbc7930, 0x4beb80, 0xc00cbc30e0, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc0200790a8 sp=0xc020079010 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc7930, 0xc0200791c0, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc020079118 sp=0xc0200790a8 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc0200791c0, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc020079180 sp=0xc020079118 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020079268)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc020079208 sp=0xc020079180 pc=0x498a1d
main.(*bitch).String(0xc00cbc30b0, 0x4beb80, 0xc00cbc30b0)
:1 +0x77 fp=0xc020079278 sp=0xc020079208 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc7860, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc020079488 sp=0xc020079278 pc=0x493399
fmt.(*pp).printArg(0xc00cbc7860, 0x4beb80, 0xc00cbc30b0, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc020079520 sp=0xc020079488 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc7860, 0xc020079638, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc020079590 sp=0xc020079520 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc020079638, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc0200795f8 sp=0xc020079590 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc0200796e0)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc020079680 sp=0xc0200795f8 pc=0x498a1d
main.(*bitch).String(0xc00cbc3080, 0x4beb80, 0xc00cbc3080)
:1 +0x77 fp=0xc0200796f0 sp=0xc020079680 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc7790, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc020079900 sp=0xc0200796f0 pc=0x493399
fmt.(*pp).printArg(0xc00cbc7790, 0x4beb80, 0xc00cbc3080, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc020079998 sp=0xc020079900 pc=0x49395d
fmt.(*pp).doPrintln(0xc00cbc7790, 0xc020079ab0, 0x1, 0x1)
F:/Go/src/fmt/print.go:1173 +0xb9 fp=0xc020079a08 sp=0xc020079998 pc=0x498429
fmt.Fprintln(0x4eb7a0, 0xc000006018, 0xc020079ab0, 0x1, 0x1, 0x0, 0x0, 0x0)
F:/Go/src/fmt/print.go:264 +0x5f fp=0xc020079a70 sp=0xc020079a08 pc=0x49053f
fmt.Println(...)
F:/Go/src/fmt/print.go:274
main.bitch.String(0x1c8, 0x5, 0x404819999999999a, 0x4d02ee, 0x4, 0x0, 0xc020079b58)
D:/go/structAIntefaceExp.go:39 +0xbd fp=0xc020079af8 sp=0xc020079a70 pc=0x498a1d
main.(*bitch).String(0xc00cbc3050, 0x4beb80, 0xc00cbc3050)
:1 +0x77 fp=0xc020079b68 sp=0xc020079af8 pc=0x499477
fmt.(*pp).handleMethods(0xc00cbc76c0, 0x76, 0xc000028001)
F:/Go/src/fmt/print.go:630 +0x309 fp=0xc020079d78 sp=0xc020079b68 pc=0x493399
fmt.(*pp).printArg(0xc00cbc76c0, 0x4beb80, 0xc00cbc3050, 0x76)
F:/Go/src/fmt/print.go:713 +0x20d fp=0xc020079e10 sp=0xc020079d78 pc=0x49395d
exit status 2

[bserdar]

You have an infinite recursion here. fmt.Println(b) will call b.String(), which will call fmt.Println(b)....

func(b bitch) String() string{
fmt.Println(b)//old
return fmt.Sprintf(b.r.name)
}

[ALTree]

What @bserdar said. You cannot call Print on a type that has a String method inside the type's String method.

Closing here, since this is working as intended.