cmd/cgo: no atexit support

[gopherbot]

by eduard.castany:

What steps will reproduce the problem?
package main

/*
#include <stdio.h>
void print() {
    printf("yuhu\nyuhu");
}
*/
import "C"

func main() {
    C.print()
}

What is the expected output?
yuhu
yuhu

What do you see instead?
yuhu

Which compiler are you using (5g, 6g, 8g, gccgo)?
6g

Which operating system are you using?
linux 64

Which version are you using?  (run 'go version')
go version devel +2c2052f38c3c Tue Oct 09 09:55:57 2012 +0400

[rsc]

Comment 1:

A Go program exiting does not call C's atexit handlers, so stdout does not get flushed.
If you add C.fflush() to your program, you'll get both lines.
I think we probably want to keep the current behavior: we've worked hard to avoid atexit
handlers.

Labels changed: added priority-later, removed priority-triage.

Status changed to Thinking.

[rsc]

Comment 2:

Yes, please use an explicit C.fflush.

Status changed to WorkingAsIntended.