fmt.Printf("%v\n",abigslice) has no output on windows

[Morven]

Sample program could be run at goplay: http://play.golang.org/p/sMrf3TN7kZ

which is correct

but on windows there's no ouput for the big silce, and there's No warnings & No errors.

the go version cmd output is: go version go1.0.2

package main

import (

"fmt"

)

type S struct {

A int

B string

}

func main() {

var slice []S

for i := 0; i < 10000; i++ {

s := S{i, "asdf"}

slice = append(slice, s)

}

fmt.Printf("len(slice):%d\n", len(slice))

fmt.Printf("slice:%v\n", slice)

}

What's wrong?

[Jesse McNelis]

On Wed, Jul 18, 2012 at 11:52 AM, Morven <sun...@gmail.com> wrote:
> Sample program could be run at goplay: http://play.golang.org/p/sMrf3TN7kZ
> which is correct
>
> but on windows there's no ouput for the big silce, and there's No warnings &
> No errors.

It's very strange to have a problem printing to stdout, so people
rarely check the error value returned from fmt.Printf()
But if you're having problems it might be reasonable to see what that error is.


--
=====================
http://jessta.id.au

[Morven]

在 2012年7月18日星期三UTC+8上午10时02分21秒，Jesse McNelis写道：

It's very strange to have a problem printing to stdout, so people
rarely check the error value returned from fmt.Printf()
But if you're having problems it might be reasonable to see what that error is.

Well, actually there's no problem about my own program, it's fine running, but i'm surprised to  notice

there's nothing printed to stdout.

There must be wrong somewhere with things like this, so what's that?

[Steve McCoy]

On Tuesday, July 17, 2012 10:33:01 PM UTC-4, Morven wrote:

Well, actually there's no problem about my own program, it's fine running, but i'm surprised to  notice

there's nothing printed to stdout.

There must be wrong somewhere with things like this, so what's that?

He means, don't ignore the return values from fmt.Printf, because they might hold a clue. 

[brainman]

On Wednesday, 18 July 2012 11:52:23 UTC+10, Morven wrote:

What's wrong?

Perhaps it is similar to what I have seen:
http://code.google.com/p/go/issues/detail?id=3767

Alex

[peterGo]

Morven,

You didn't check for errors. For example,

package main

import (
    "fmt"
)

type S struct {
    A   int
    B   string
}

func main() {
    var slice []S
    for i := 0; i < 10000; i++ {
        s := S{i, "asdf"}
        slice = append(slice, s)
    }

    n, err := fmt.Printf("len(slice):%d\n", len(slice))
    n, err = fmt.Printf("slice:%v\n", slice)
    if err != nil {
        fmt.Println(n, err)
    }
}

Output:
len(slice):10000
0 write /dev/stdout: Not enough storage is available to process this command.

Peter

[peterGo]

Morven,

It's:

Issue 3376: windows: detect + handle console in os.File.Write
http://code.google.com/p/go/issues/detail?id=3376

Peter

[Morven]

Thank you for all you reply , i finally got it!

I've some misunderstandings about the return values of fmt.Printf