// and returns the symbolz output in a string. If force is false, it will only
// symbolize locations from mappings not already marked as HasFunctions. Never
// attempts symbolization of addresses from unsymbolizable system
// mappings as those may look negative - e.g. "[vsyscall]".
func Symbolize(p *profile.Profile, force bool, sources plugin.MappingSources, syms func(string, string) ([]byte, error), ui plugin.UI) error {

			continue
		}
		if m.File == "" {
			if midx == 0 {
				ui.PrintErr("Main binary filename not available.")
				continue
			}
			missingBinaries = true
			continue
		}
		if m.Unsymbolizable() {
			// Skip well-known system mappings
			continue
		}
		if m.BuildID == "" {
			if u, err := url.Parse(m.File); err == nil && u.IsAbs() && strings.Contains(strings.ToLower(u.Scheme), "http") {

			return false
		}
	}
	return true
}

// Unsymbolizable returns true if a mapping points to a binary for which
// locations can't be symbolized in principle, at least now. Examples are
// "[vdso]", [vsyscall]" and some others, see the code.
func (m *Mapping) Unsymbolizable() bool {
	name := filepath.Base(m.File)