runtime/race: rebuild some .syso files to remove getauxval dependency

We can't depend on getauxval because it only exists in glibc >= 2.16.
Tsan has been updated to avoid that dependency
(https://reviews.llvm.org/D84859). This CL rebuilds the affected
.syso files, and adds a test to make sure we don't regress.

Fixes #37485

Change-Id: I891f54d28ec0d7da50a8df1adadc76dd6e7ab3e0
Reviewed-on: https://go-review.googlesource.com/c/go/+/246258
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>

5 files changed, 42 insertions, 3 deletions

diff --git a/src/runtime/race/README b/src/runtime/race/README
index 65378c8ca6..34485f0fb2 100644
--- a/src/runtime/race/README
+++ b/src/runtime/race/README
@@ -6,8 +6,8 @@ To update the .syso files use golang.org/x/build/cmd/racebuild.
 
 race_darwin_amd64.syso built with LLVM 3496d6e4bea9cb99cb382939b7e79a50a3b863a5 and Go 553e003414d3aa90cc39830ee22f08453d9f3408.
 race_freebsd_amd64.syso built with LLVM 3496d6e4bea9cb99cb382939b7e79a50a3b863a5 and Go 553e003414d3aa90cc39830ee22f08453d9f3408.
-race_linux_amd64.syso built with LLVM 3496d6e4bea9cb99cb382939b7e79a50a3b863a5 and Go 553e003414d3aa90cc39830ee22f08453d9f3408.
-race_linux_ppc64le.syso built with LLVM 3496d6e4bea9cb99cb382939b7e79a50a3b863a5 and Go 553e003414d3aa90cc39830ee22f08453d9f3408.
+race_linux_amd64.syso built with LLVM 6c75db8b4bc59eace18143ce086419d37da24746 and Go 7388956b76ce15a11346cebefcf6193db044caaf.
+race_linux_ppc64le.syso built with LLVM 6c75db8b4bc59eace18143ce086419d37da24746 and Go 7388956b76ce15a11346cebefcf6193db044caaf.
 race_netbsd_amd64.syso built with LLVM 3496d6e4bea9cb99cb382939b7e79a50a3b863a5 and Go 553e003414d3aa90cc39830ee22f08453d9f3408.
 race_windows_amd64.syso built with LLVM 3496d6e4bea9cb99cb382939b7e79a50a3b863a5 and Go 553e003414d3aa90cc39830ee22f08453d9f3408.
-race_linux_arm64.syso built with LLVM 3496d6e4bea9cb99cb382939b7e79a50a3b863a5 and Go 553e003414d3aa90cc39830ee22f08453d9f3408.
+race_linux_arm64.syso built with LLVM 6c75db8b4bc59eace18143ce086419d37da24746 and Go 7388956b76ce15a11346cebefcf6193db044caaf.
diff --git a/src/runtime/race/race_linux_amd64.syso b/src/runtime/race/race_linux_amd64.syso
index 255b2e5c08..d31f85df56 100644
--- a/src/runtime/race/race_linux_amd64.syso
+++ b/src/runtime/race/race_linux_amd64.syso
diff --git a/src/runtime/race/race_linux_arm64.syso b/src/runtime/race/race_linux_arm64.syso
index f15c5995e6..7c74171b0f 100644
--- a/src/runtime/race/race_linux_arm64.syso
+++ b/src/runtime/race/race_linux_arm64.syso
diff --git a/src/runtime/race/race_linux_ppc64le.syso b/src/runtime/race/race_linux_ppc64le.syso
index 2bf5029659..a3c72bec55 100644
--- a/src/runtime/race/race_linux_ppc64le.syso
+++ b/src/runtime/race/race_linux_ppc64le.syso
diff --git a/src/runtime/race/syso_test.go b/src/runtime/race/syso_test.go
new file mode 100644
index 0000000000..e959c8d0bd
--- /dev/null
+++ b/src/runtime/race/syso_test.go
@@ -0,0 +1,39 @@
+// Copyright 2020 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.
+
+// +build !android,!js
+
+// Note: we don't run on Android because if there is any non-race test
+// file in this package, Android tries to link the .syso file into the
+// test (even when we're not in race mode), which fails. I'm not sure
+// why, but easiest to just punt - as long as a single builder runs
+// this test, we're good.
+
+package race
+
+import (
+	"bytes"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"testing"
+)
+
+func TestIssue37485(t *testing.T) {
+	files, err := filepath.Glob("./*.syso")
+	if err != nil {
+		t.Fatalf("can't find syso files: %s", err)
+	}
+	for _, f := range files {
+		cmd := exec.Command(filepath.Join(runtime.GOROOT(), "bin", "go"), "tool", "nm", f)
+		res, err := cmd.CombinedOutput()
+		if err != nil {
+			t.Errorf("nm of %s failed: %s", f, err)
+			continue
+		}
+		if bytes.Contains(res, []byte("getauxval")) {
+			t.Errorf("%s contains getauxval", f)
+		}
+	}
+}