continue
			}
			s.UI.PrintErr("ignoring unrecognized symbolization option: " + mode)
			s.UI.PrintErr("expecting -symbolize=[local|fastlocal|remote|none][:force][:demangle=[none|full|templates|default]")
		}
	}

	var err error
	if local {
		// Symbolize locally using binutils.
		if err = localSymbolize(p, fast, force, s.Obj, s.UI); err != nil {
			s.UI.PrintErr("local symbolization: " + err.Error())
		}
	}
	if remote {

		if key == "" {
			// If there is no build id or source file, use the source as the
			// mapping file. This will enable remote symbolization for this
			// mapping, in particular for Go profiles on the legacy format.
			// The source is reset back to empty string by unsourceMapping
			// which is called after symbolization is finished.
			m.File = source
			key = source
		}
		ms[key] = append(ms[key], src)
	}
	return ms
}

	addr2line           string
	addr2lineFound      bool
	nm                  string
	nmFound             bool
	objdump             string
	objdumpFound        bool
	isLLVMObjdump       bool

	// if fast, perform symbolization using nm (symbol names only),
	// instead of file-line detail from the slower addr2line.
	fast bool
}

// get returns the current representation for bu, initializing it if necessary.
func (bu *Binutils) get() *binrep {

				// more small program segments that fit on the same page, and a
				// segment other than the last one includes uninitialized data, or
				// if the debug binary used for symbolization is stripped of some
				// sections, so segment file sizes are smaller than memory sizes.

	HasInlineFrames bool

	fileX    int64
	buildIDX int64

	// Name of the kernel relocation symbol ("_text" or "_stext"), extracted from File.
	// For linux kernel mappings generated by some tools, correct symbolization depends
	// on knowing which of the two possible relocation symbols was used for `Start`.
	// This is given to us as a suffix in `File` (e.g. "[kernel.kallsyms]_stext").
	//

	output := runTestProg(t, "testprog", "BadTraceback")
	for _, want := range []string{
		"unexpected return pc",
		"called from 0xbad",
		"00000bad",    // Smashed LR in hex dump
		"<main.badLR", // Symbolization in hex dump (badLR1 or badLR2)
	} {
		if !strings.Contains(output, want) {
			t.Errorf("output does not contain %q:\n%s", want, output)
		}
	}
}

func TestTimePprof(t *testing.T) {