Make sure some version information is set when no version was injected into the binary

Signed-off-by: Cosmin Cojocar <cosmin.cojocar@gmx.ch>

cmd/gosec/main.go

@@ -240,6 +240,9 @@ func filterIssues(issues []*gosec.Issue, severity gosec.Score, confidence gosec.
 }
 
 func main() {
+	// Makes sure some version information is set
+	prepareVersionInfo()
+
 	// Setup usage description
 	flag.Usage = usage
 

cmd/gosec/version.go

@@ -1,5 +1,9 @@
 package main
 
+import (
+	"runtime/debug"
+)
+
 // Version is the build version
 var Version string
 
@@ -8,3 +12,14 @@ var GitTag string
 
 // BuildDate is the date when the build was created
 var BuildDate string
+
+// prepareVersionInfo sets some runtime version when the version value
+// was not injected by the build into the binary (e.g. go get).
+// This returns currently "(devel)" but not an effective version until
+// https://github.com/golang/go/issues/29814 gets resolved.
+func prepareVersionInfo() {
+	if Version == "" {
+		bi, _ := debug.ReadBuildInfo()
+		Version = bi.Main.Version
+	}
+}