Scanln fails to stop for input during debug on Linux

[michaljaros84]

• Plugin version (or commit hash):
  0.13.1914

• IDE name and version:
  IntelliJ IDEA community

• Go version;
  1.7.3

• Java version:
  1.8.0_111

• OS name and version:
  Ubuntu 16.04.1 LTS

• What are you trying to do?
  Trying to get program to stop for input on fmt.Scanln

• What would you expect to happen?
  Execution to wait for input when Scanln is reached

• What happens?
  Execution continues and program acts like empty string/white space was entered

This is really simple example I created to test the Scanln issue as I used to get it on Windows. Funny story: on windows it now works (same IDE, plugin and go versions) but fails under Linux.

Code:

package main

import "fmt"

func main() {
var x string
fmt.Println("Type smth:")
fmt.Scanln(&x)
fmt.Println("Typed:", x)
}

This works if simply executed either in IDE or using simple 'go build' from command line, but fails when debuger is attached.

Tested configuration:

1. GOROOT and GOPATH on separate partition mounted into /media/usr
   

2. Default root and go path in /home/usr
   

[michaljaros84]

Ok did something most obvious and try to handle the error. Looks like the Scanln when called through Delve throws EOF -> this is not thrown when program is simply run, without debuging. Happens both through the IDE and directly in command line:

IDE

CMD

[michaljaros84]

This looks like delve issue. Moved to https://github.com/derekparker/delve/issues/679.

Closed.

[zolotov]

Thank you for investigation. Indeed it looks like delve's issue