When i compare with Empty version string Getting Error

[vinaykumarva]

v1, _ := version.NewVersion("")
	v2, _ := version.NewVersion("10.3")
	if v1.LessThan(v2) {
		fmt.Println("v1<v2")
	} else {
		fmt.Println("v2<v1")
	}

panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x4a3bd3]

goroutine 1 [running]:
github.com/hashicorp/go-version.(*Version).String(0x0)
/go/pkg/mod/github.com/hashicorp/go-version@v1.6.0/version.go:369 +0x33
github.com/hashicorp/go-version.(*Version).Compare(0xc000080140, 0x0)
/go/pkg/mod/github.com/hashicorp/go-version@v1.6.0/version.go:116 +0x39
github.com/hashicorp/go-version.(*Version).GreaterThan(...)
/go/pkg/mod/github.com/hashicorp/go-version@v1.6.0/version.go:298
main.main()
/workspaces/learning/rc/string.go:18 +0x95
exit status 2

[alexandear]

To avoid a panic it's needed adding a check to handle the case where version.NewVersion returns an error for an empty version string:

	v1, err := version.NewVersion("")
	if err != nil {
		fmt.Printf("v1 error: %q\n", err) // Output: v1 error: Malformed version: 
		return
	}
	v2, err := version.NewVersion("10.3")
	if err != nil {
		fmt.Printf("v2 error: %v\n", err)
		return
	}
	if v1.LessThan(v2) {
		fmt.Println("v1<v2")
	} else {
		fmt.Println("v2<v1")
	}