setup typecheck error file if it's empty

pkg/packages/util.go

@@ -31,6 +31,16 @@ func ExtractErrors(pkg *packages.Package) []packages.Error {
 		}
 	}
 
+	// some errors like "code in directory  expects import" don't have Pos, set it here
+	if len(pkg.GoFiles) != 0 {
+		for i := range uniqErrors {
+			err := &uniqErrors[i]
+			if err.Pos == "" {
+				err.Pos = fmt.Sprintf("%s:1", pkg.GoFiles[0])
+			}
+		}
+	}
+
 	return uniqErrors
 }
 

pkg/result/processors/autogenerated_exclude.go

@@ -83,6 +83,10 @@ func (p *AutogeneratedExclude) getOrCreateFileSummary(i *result.Issue) (*ageFile
 	fs = &ageFileSummary{}
 	p.fileSummaryCache[i.FilePath()] = fs
 
+	if i.FilePath() == "" {
+		return nil, fmt.Errorf("no file path for issue")
+	}
+
 	f := p.astCache.GetOrParse(i.FilePath(), nil)
 	if f.Err != nil {
 		return nil, fmt.Errorf("can't parse file %s: %s", i.FilePath(), f.Err)

pkg/result/processors/nolint.go

@@ -83,6 +83,10 @@ func (p *Nolint) getOrCreateFileData(i *result.Issue) (*fileData, error) {
 	fd = &fileData{}
 	p.cache[i.FilePath()] = fd
 
+	if i.FilePath() == "" {
+		return nil, fmt.Errorf("no file path for issue")
+	}
+
 	file := p.astCache.GetOrParse(i.FilePath(), nil)
 	if file.Err != nil {
 		return nil, fmt.Errorf("can't parse file %s: %s", i.FilePath(), file.Err)