Gecko [ 167.86.127.34 ]

Name	Size	Permission
testdata	[ DIR ]	drwxr-xr-x
attr_string.go	7.91 KB	-rw-r--r--
buf.go	3.72 KB	-rw-r--r--
class_string.go	1.13 KB	-rw-r--r--
const.go	13.56 KB	-rw-r--r--
entry.go	24.98 KB	-rw-r--r--
entry_test.go	5.47 KB	-rw-r--r--
export_test.go	199 B	-rw-r--r--
line.go	23.17 KB	-rw-r--r--
line_test.go	10.21 KB	-rw-r--r--
open.go	3.59 KB	-rw-r--r--
tag_string.go	3.95 KB	-rw-r--r--
type.go	17.95 KB	-rw-r--r--
type_test.go	6.07 KB	-rw-r--r--
typeunit.go	3.63 KB	-rw-r--r--
unit.go	2.64 KB	-rw-r--r--

Code Editor : type_test.go

// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package dwarf_test

import (
	. "debug/dwarf"
	"debug/elf"
	"debug/macho"
	"debug/pe"
	"fmt"
	"strconv"
	"testing"
)

// As Apple converts gcc to a clang-based front end
// they keep breaking the DWARF output. This map lists the
// conversion from real answer to Apple answer.
var machoBug = map[string]string{
	"func(*char, ...) void":                                 "func(*char) void",
	"enum my_enum {e1=1; e2=2; e3=-5; e4=1000000000000000}": "enum my_enum {e1=1; e2=2; e3=-5; e4=-1530494976}",
}

func elfData(t *testing.T, name string) *Data {
	f, err := elf.Open(name)
	if err != nil {
		t.Fatal(err)
	}

d, err := f.DWARF()
	if err != nil {
		t.Fatal(err)
	}
	return d
}

func machoData(t *testing.T, name string) *Data {
	f, err := macho.Open(name)
	if err != nil {
		t.Fatal(err)
	}

d, err := f.DWARF()
	if err != nil {
		t.Fatal(err)
	}
	return d
}

func peData(t *testing.T, name string) *Data {
	f, err := pe.Open(name)
	if err != nil {
		t.Fatal(err)
	}

d, err := f.DWARF()
	if err != nil {
		t.Fatal(err)
	}
	return d
}

func TestTypedefsELF(t *testing.T) { testTypedefs(t, elfData(t, "testdata/typedef.elf"), "elf") }

func TestTypedefsMachO(t *testing.T) {
	testTypedefs(t, machoData(t, "testdata/typedef.macho"), "macho")
}

func TestTypedefsELFDwarf4(t *testing.T) { testTypedefs(t, elfData(t, "testdata/typedef.elf4"), "elf") }

func testTypedefs(t *testing.T, d *Data, kind string) {
	r := d.Reader()
	seen := make(map[string]bool)
	for {
		e, err := r.Next()
		if err != nil {
			t.Fatal("r.Next:", err)
		}
		if e == nil {
			break
		}
		if e.Tag == TagTypedef {
			typ, err := d.Type(e.Offset)
			if err != nil {
				t.Fatal("d.Type:", err)
			}
			t1 := typ.(*TypedefType)
			var typstr string
			if ts, ok := t1.Type.(*StructType); ok {
				typstr = ts.Defn()
			} else {
				typstr = t1.Type.String()
			}

if want, ok := typedefTests[t1.Name]; ok {
				if seen[t1.Name] {
					t.Errorf("multiple definitions for %s", t1.Name)
				}
				seen[t1.Name] = true
				if typstr != want && (kind != "macho" || typstr != machoBug[want]) {
					t.Errorf("%s:\n\thave %s\n\twant %s", t1.Name, typstr, want)
				}
			}
		}
		if e.Tag != TagCompileUnit {
			r.SkipChildren()
		}
	}

for k := range typedefTests {
		if !seen[k] {
			t.Errorf("missing %s", k)
		}
	}
}

func TestTypedefCycle(t *testing.T) {
	// See issue #13039: reading a typedef cycle starting from a
	// different place than the size needed to be computed from
	// used to crash.
	//
	// cycle.elf built with GCC 4.8.4:
	//    gcc -g -c -o cycle.elf cycle.c
	d := elfData(t, "testdata/cycle.elf")
	r := d.Reader()
	offsets := []Offset{}
	for {
		e, err := r.Next()
		if err != nil {
			t.Fatal("r.Next:", err)
		}
		if e == nil {
			break
		}
		switch e.Tag {
		case TagBaseType, TagTypedef, TagPointerType, TagStructType:
			offsets = append(offsets, e.Offset)
		}
	}

// Parse each type with a fresh type cache.
	for _, offset := range offsets {
		d := elfData(t, "testdata/cycle.elf")
		_, err := d.Type(offset)
		if err != nil {
			t.Fatalf("d.Type(0x%x): %s", offset, err)
		}
	}
}

var unsupportedTypeTests = []string{
	// varname:typename:string:size
	"culprit::(unsupported type ReferenceType):8",
	"pdm::(unsupported type PtrToMemberType):-1",
}

func TestUnsupportedTypes(t *testing.T) {
	// Issue 29601:
	// When reading DWARF from C++ load modules, we can encounter
	// oddball type DIEs. These will be returned as "UnsupportedType"
	// objects; check to make sure this works properly.
	d := elfData(t, "testdata/cppunsuptypes.elf")
	r := d.Reader()
	seen := make(map[string]bool)
	for {
		e, err := r.Next()
		if err != nil {
			t.Fatal("r.Next:", err)
		}
		if e == nil {
			break
		}
		if e.Tag == TagVariable {
			vname, _ := e.Val(AttrName).(string)
			tAttr := e.Val(AttrType)
			typOff, ok := tAttr.(Offset)
			if !ok {
				t.Errorf("variable at offset %v has no type", e.Offset)
				continue
			}
			typ, err := d.Type(typOff)
			if err != nil {
				t.Errorf("err in type decode: %v\n", err)
				continue
			}
			unsup, isok := typ.(*UnsupportedType)
			if !isok {
				continue
			}
			tag := vname + ":" + unsup.Name + ":" + unsup.String() +
				":" + strconv.FormatInt(unsup.Size(), 10)
			seen[tag] = true
		}
	}
	dumpseen := false
	for _, v := range unsupportedTypeTests {
		if !seen[v] {
			t.Errorf("missing %s", v)
			dumpseen = true
		}
	}
	if dumpseen {
		for k := range seen {
			fmt.Printf("seen: %s\n", k)
		}
	}
}

${this.title}

Code Editor : type_test.go