Detect defer calls skipped by os.Exit

[fionera]

The following code is not executing its defer function as log.Fatal calls syscall.Exit. This can prevent cleanup functions to run and could be unexpected to some developers.

package main

import (
    "log"
)

func main() {
    defer func() {
        println("no worries I will help you, too bad this doesn't execute")
    }()

    log.Fatal("oh no I slipped")
}