"No issues were found" even with an blank file

[quantonganh]

Steps to reproduce:

• cd /tmp
• touch blank.go
• then run golangci-lint run -v blank.go:

INFO[0000] Active linters: [deadcode govet errcheck megacheck gas varcheck ineffassign structcheck]
INFO[0000] Found paths for analysis for 56.244µs: [blank.go]
/tmp/blank.go:1:1: expected 'package', found 'EOF'
INFO[0000] Program loading took 3.005445ms
INFO[0000] SSA repr building took 7.026µs
INFO[0000] worker.3 took 1.807229ms with stages: errcheck: 924.983µs, ineffassign: 846.136µs, varcheck: 14.522µs, structcheck: 5.831µs, deadcode: 3.545µs
INFO[0000] worker.4 took 1.854175ms with stages: govet: 1.845642ms
INFO[0000] Panic stack trace: goroutine 38 [running]:
runtime/debug.Stack(0x17d70b6, 0x11, 0xc42042f7c8)
        /usr/local/Cellar/go/1.10.1/libexec/src/runtime/debug/stack.go:24 +0xa7
github.com/golangci/golangci-lint/pkg.runLinterSafe.func1(0xc42042fd10)
        /Users/quanta/go/src/github.com/golangci/golangci-lint/pkg/runner.go:34 +0xc2
panic(0x16ee1a0, 0x1c8efa0)
        /usr/local/Cellar/go/1.10.1/libexec/src/runtime/panic.go:502 +0x229
go/token.(*File).Name(...)
        /usr/local/Cellar/go/1.10.1/libexec/src/go/token/position.go:105
github.com/golangci/golangci-lint/vendor/github.com/GoASTScanner/gas.(*Analyzer).ProcessProgram(0xc420104230, 0xc4200c4080)
        /Users/quanta/go/src/github.com/golangci/golangci-lint/vendor/github.com/GoASTScanner/gas/analyzer.go:148 +0x16d
github.com/golangci/golangci-lint/pkg/golinters.Gas.Run(0x188a280, 0xc42013e840, 0xc4200fee10, 0x102a909, 0x8, 0xc420106200, 0x2, 0xc42013cc80)
        /Users/quanta/go/src/github.com/golangci/golangci-lint/pkg/golinters/gas.go:34 +0x1c3
github.com/golangci/golangci-lint/pkg.runLinterSafe(0x188a280, 0xc42013e840, 0xc4200fee10, 0x18892c0, 0x1cc0a20, 0x0, 0x0, 0x0, 0x1881020, 0xc42041e3a0)
        /Users/quanta/go/src/github.com/golangci/golangci-lint/pkg/runner.go:38 +0x9f
github.com/golangci/golangci-lint/pkg.runWorker.func1()
        /Users/quanta/go/src/github.com/golangci/golangci-lint/pkg/runner.go:61 +0x64
github.com/golangci/golangci-lint/pkg/timeutils.(*Stopwatch).TrackStage(0xc420106040, 0x17beda2, 0x3, 0xc42013ce60)
        /Users/quanta/go/src/github.com/golangci/golangci-lint/pkg/timeutils/stopwatch.go:73 +0x53
github.com/golangci/golangci-lint/pkg.runWorker(0x188a280, 0xc42013e840, 0xc4200fee10, 0xc4201a4d80, 0xc4201a4de0, 0xc4204c2008, 0x8)
        /Users/quanta/go/src/github.com/golangci/golangci-lint/pkg/runner.go:60 +0x185
github.com/golangci/golangci-lint/pkg.(*SimpleRunner).runWorkers.func1(0xc420369450, 0x188a280, 0xc42013e840, 0xc4200fee10, 0xc4201a4d80, 0xc4201a4de0, 0xc4201a4e40, 0x4, 0x4, 0x0)
        /Users/quanta/go/src/github.com/golangci/golangci-lint/pkg/runner.go:118 +0x117
created by github.com/golangci/golangci-lint/pkg.(*SimpleRunner).runWorkers
        /Users/quanta/go/src/github.com/golangci/golangci-lint/pkg/runner.go:115 +0x1e6

INFO[0000] worker.1 took 6.643812ms with stages: gas: 6.461126ms
INFO[0000] Can't run linter gas: panic occured: runtime error: invalid memory address or nil pointer dereference
INFO[0000] worker.2 took 15.14121ms with stages: megacheck: 15.117582ms
INFO[0000] Workers idle times: #1: 8.572497ms, #3: 13.38068ms, #4: 13.37371ms
INFO[0000] processing took 167.02µs with stages: max_same_issues: 163.107µs, max_from_linter: 1.24µs, path_prettifier: 970ns, diff: 838ns, exclude: 452ns, cgo: 246ns, max_per_file_from_linter: 67ns, uniq_by_line: 51ns, nolint: 49ns
Congrats! No issues were found.
INFO[0000] Extracting issued lines took 0s
INFO[0000] Memory: 1 samples, avg is 15.3MB, max is 15.3MB
INFO[0000] Execution took 21.079892ms

Shouldn't "/tmp/blank.go:1:1: expected 'package', found 'EOF'" be considered as an issue?

[golangci]

thank you for the report!
fixed in #38, check please in master:
go get -u github.com/golangci/golangci-lint/cmd/golangci-lint

[quantonganh]

It's ok now:

INFO[0000] Concurrency: 4, machine cpus count: 4
INFO[0000] Active linters: [govet deadcode structcheck varcheck ineffassign typecheck errcheck megacheck gas]
INFO[0000] set GOROOT="/usr/local/Cellar/go/1.10.1/libexec"
INFO[0000] Found paths for analysis for 72.387µs: [blank.go]
INFO[0000] Program loading took 1.474888ms
INFO[0000] SSA repr building took 14.303µs
INFO[0000] worker.3 took 765.727µs with stages: gas: 747.482µs, structcheck: 5.467µs, deadcode: 5.452µs
INFO[0000] worker.1 took 771.714µs with stages: ineffassign: 680.54µs, errcheck: 61.05µs, typecheck: 13.554µs, varcheck: 2.061µs
INFO[0000] worker.4 took 1.562359ms with stages: govet: 1.556615ms
INFO[0000] Can't process result by nolint processor: can't filter issue result.Issue{FromLinter:"typecheck", Text:"expected 'package', found 'EOF'", Pos:token.Position{Filename:"blank.go", Offset:0, Line:1, Column:1}, LineRange:result.Range{From:0, To:0}, HunkPos:0}: can't parse file blank.go
blank.go:1:1: expected 'package', found 'EOF' (typecheck)

^
INFO[0000] worker.2 took 2.784486ms with stages: megacheck: 2.759468ms
INFO[0000] processing took 875.653µs with stages: nolint: 716.23µs, exclude: 100.895µs, path_prettifier: 33.416µs, uniq_by_line: 11.442µs, max_same_issues: 7.82µs, max_per_file_from_linter: 2.323µs, max_from_linter: 1.718µs, cgo: 1.081µs, diff: 728ns
INFO[0000] Found 1 issues
INFO[0000] Extracting issued lines took 64.471µs
INFO[0000] Workers idle times: #1: 1.873388ms, #3: 1.893345ms, #4: 1.095593ms
INFO[0000] Memory: 1 samples, avg is 15.5MB, max is 15.5MB
INFO[0000] Execution took 84.253742ms