errcheck issue isn't reported

[ferhatelmas]

It is expected to get an errcheck lint error in the following program.
errcheck reports but golangci-lint doesn't.

package main

import (
	"fmt"
	"os"
)

func main() {
	os.Setenv("test", "some_value")
	fmt.Println("no lint error")
}

Please include the following information:

1. Version of golangci-lint:
   1.17.1

2. Config file: cat .golangci.yml
   https://gist.github.com/ferhatelmas/62bbfdb744316f24a9d207c5bac0bcf7

3. Go environment: go version && go env
   https://gist.github.com/ferhatelmas/d85e9c6dc8ce7850da37e641c87f283f

4. Verbose output of running: golangci-lint run -v
   https://gist.github.com/ferhatelmas/4b92c91cff8456d21084494c849970f7

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[JohnStarich]

Poking this issue to keep it open. I’m also having this issue

[cjkreklow]

This looks like the expected behavior of exclusion EXC0001:

[~/tmp] [pts/0]% golangci-lint run --help
...
      --exclude-use-default            Use or not use default excludes:
                                         # EXC0001 errcheck: Almost all programs ignore errors on these functions and in most cases it's ok
                                         - Error return value of .((os\.)?std(out|err)\..*|.*Close|.*Flush|os\.Remove(All)?|.*printf?|os\.(Un)?Setenv). is not checked

Running with option --exclude-use-default=false shows the error on os.Setenv:

[~/tmp] [pts/0]% golangci-lint run --exclude-use-default=false main.go
main.go:9:11: Error return value of `os.Setenv` is not checked (errcheck)
        os.Setenv("test", "some_value")

You can also just re-include EXC0001 in .golangci.yml:

issues:
  include:
    - EXC0001

It looks like errcheck itself excludes the check on fmt.Print*.

[ernado]

Please re-include EXC0001 for this check.
Closing for now.