mirror of
https://github.com/golang/go.git
synced 2025-05-23 08:21:24 +00:00
12dbd20a50
.dynsym section info field is the index of first non-local symbol, mean the number of local symbols. The go linker have never ever set it before, so just set it. Fixes #33358 Change-Id: Ifde2deb7c15471b04d565861f5d81daffb0c0d3d Reviewed-on: https://go-review.googlesource.com/c/go/+/187979 Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
80 lines
1.6 KiB
Go
80 lines
1.6 KiB
Go
// +build cgo
|
|
|
|
// Copyright 2019 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 ld
|
|
|
|
import (
|
|
"debug/elf"
|
|
"internal/testenv"
|
|
"io/ioutil"
|
|
"os"
|
|
"os/exec"
|
|
"path/filepath"
|
|
"testing"
|
|
)
|
|
|
|
func TestDynSymShInfo(t *testing.T) {
|
|
t.Parallel()
|
|
testenv.MustHaveGoBuild(t)
|
|
dir, err := ioutil.TempDir("", "go-build-issue33358")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(dir)
|
|
|
|
const prog = `
|
|
package main
|
|
|
|
import "net"
|
|
|
|
func main() {
|
|
net.Dial("", "")
|
|
}
|
|
`
|
|
src := filepath.Join(dir, "issue33358.go")
|
|
if err := ioutil.WriteFile(src, []byte(prog), 0666); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
binFile := filepath.Join(dir, "issue33358")
|
|
cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", binFile, src)
|
|
if out, err := cmd.CombinedOutput(); err != nil {
|
|
t.Fatalf("%v: %v:\n%s", cmd.Args, err, out)
|
|
}
|
|
|
|
fi, err := os.Open(binFile)
|
|
if err != nil {
|
|
t.Fatalf("failed to open built file: %v", err)
|
|
}
|
|
|
|
elfFile, err := elf.NewFile(fi)
|
|
if err != nil {
|
|
t.Skip("The system may not support ELF, skipped.")
|
|
}
|
|
|
|
section := elfFile.Section(".dynsym")
|
|
if section == nil {
|
|
t.Fatal("no dynsym")
|
|
}
|
|
|
|
symbols, err := elfFile.DynamicSymbols()
|
|
if err != nil {
|
|
t.Fatalf("failed to get dynamic symbols: %v", err)
|
|
}
|
|
|
|
var numLocalSymbols uint32
|
|
for i, s := range symbols {
|
|
if elf.ST_BIND(s.Info) != elf.STB_LOCAL {
|
|
numLocalSymbols = uint32(i + 1)
|
|
break
|
|
}
|
|
}
|
|
|
|
if section.Info != numLocalSymbols {
|
|
t.Fatalf("Unexpected sh info, want greater than 0, got: %d", section.Info)
|
|
}
|
|
}
|