Don't propagate ASAN through shared library dependencies
Propagating enabling ASAN through shared library dependencies
doesn't make much sense, because only the non-ASAN variant is exposed
to Make, leading to an non-installed dependency.
Bug: 186487510
Test: TestAsan
Change-Id: I7d3f20f2d10beac09c66c6b6dcb7a34a513ff3b8
diff --git a/cc/Android.bp b/cc/Android.bp
index c32cca8..1fc8d9f 100644
--- a/cc/Android.bp
+++ b/cc/Android.bp
@@ -92,6 +92,7 @@
"object_test.go",
"prebuilt_test.go",
"proto_test.go",
+ "sanitize_test.go",
"test_data_test.go",
"vendor_public_library_test.go",
"vendor_snapshot_test.go",
diff --git a/cc/sanitize.go b/cc/sanitize.go
index 397121e..4cf63f9 100644
--- a/cc/sanitize.go
+++ b/cc/sanitize.go
@@ -902,7 +902,7 @@
if d, ok := child.(PlatformSanitizeable); ok && d.SanitizePropDefined() &&
!d.SanitizeNever() &&
!d.IsSanitizerExplicitlyDisabled(t) {
- if t == cfi || t == Hwasan || t == scs {
+ if t == cfi || t == Hwasan || t == scs || t == Asan {
if d.StaticallyLinked() && d.SanitizerSupported(t) {
// Rust does not support some of these sanitizers, so we need to check if it's
// supported before setting this true.
@@ -1253,7 +1253,7 @@
modules[0].(PlatformSanitizeable).SetSanitizer(t, true)
} else if c.IsSanitizerEnabled(t) || c.SanitizeDep() {
isSanitizerEnabled := c.IsSanitizerEnabled(t)
- if c.StaticallyLinked() || c.Header() || t == Asan || t == Fuzzer {
+ if c.StaticallyLinked() || c.Header() || t == Fuzzer {
// Static and header libs are split into non-sanitized and sanitized variants.
// Shared libs are not split. However, for asan and fuzzer, we split even for shared
// libs because a library sanitized for asan/fuzzer can't be linked from a library
diff --git a/cc/sanitize_test.go b/cc/sanitize_test.go
new file mode 100644
index 0000000..f126346
--- /dev/null
+++ b/cc/sanitize_test.go
@@ -0,0 +1,204 @@
+// Copyright 2021 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cc
+
+import (
+ "testing"
+
+ "android/soong/android"
+)
+
+var prepareForAsanTest = android.FixtureAddFile("asan/Android.bp", []byte(`
+ cc_library_shared {
+ name: "libclang_rt.asan-aarch64-android",
+ }
+
+ cc_library_shared {
+ name: "libclang_rt.asan-arm-android",
+ }
+`))
+
+func TestAsan(t *testing.T) {
+ bp := `
+ cc_binary {
+ name: "bin_with_asan",
+ host_supported: true,
+ shared_libs: [
+ "libshared",
+ "libasan",
+ ],
+ static_libs: [
+ "libstatic",
+ "libnoasan",
+ ],
+ sanitize: {
+ address: true,
+ }
+ }
+
+ cc_binary {
+ name: "bin_no_asan",
+ host_supported: true,
+ shared_libs: [
+ "libshared",
+ "libasan",
+ ],
+ static_libs: [
+ "libstatic",
+ "libnoasan",
+ ],
+ }
+
+ cc_library_shared {
+ name: "libshared",
+ host_supported: true,
+ shared_libs: ["libtransitive"],
+ }
+
+ cc_library_shared {
+ name: "libasan",
+ host_supported: true,
+ shared_libs: ["libtransitive"],
+ sanitize: {
+ address: true,
+ }
+ }
+
+ cc_library_shared {
+ name: "libtransitive",
+ host_supported: true,
+ }
+
+ cc_library_static {
+ name: "libstatic",
+ host_supported: true,
+ }
+
+ cc_library_static {
+ name: "libnoasan",
+ host_supported: true,
+ sanitize: {
+ address: false,
+ }
+ }
+ `
+
+ result := android.GroupFixturePreparers(
+ prepareForCcTest,
+ prepareForAsanTest,
+ ).RunTestWithBp(t, bp)
+
+ check := func(t *testing.T, result *android.TestResult, variant string) {
+ asanVariant := variant + "_asan"
+ sharedVariant := variant + "_shared"
+ sharedAsanVariant := sharedVariant + "_asan"
+ staticVariant := variant + "_static"
+ staticAsanVariant := staticVariant + "_asan"
+
+ // The binaries, one with asan and one without
+ binWithAsan := result.ModuleForTests("bin_with_asan", asanVariant)
+ binNoAsan := result.ModuleForTests("bin_no_asan", variant)
+
+ // Shared libraries that don't request asan
+ libShared := result.ModuleForTests("libshared", sharedVariant)
+ libTransitive := result.ModuleForTests("libtransitive", sharedVariant)
+
+ // Shared library that requests asan
+ libAsan := result.ModuleForTests("libasan", sharedAsanVariant)
+
+ // Static library that uses an asan variant for bin_with_asan and a non-asan variant
+ // for bin_no_asan.
+ libStaticAsanVariant := result.ModuleForTests("libstatic", staticAsanVariant)
+ libStaticNoAsanVariant := result.ModuleForTests("libstatic", staticVariant)
+
+ // Static library that never uses asan.
+ libNoAsan := result.ModuleForTests("libnoasan", staticVariant)
+
+ // expectSharedLinkDep verifies that the from module links against the to module as a
+ // shared library.
+ expectSharedLinkDep := func(from, to android.TestingModule) {
+ t.Helper()
+ fromLink := from.Description("link")
+ toLink := to.Description("strip")
+
+ if g, w := fromLink.OrderOnly.Strings(), toLink.Output.String(); !android.InList(w, g) {
+ t.Errorf("%s should link against %s, expected %q, got %q",
+ from.Module(), to.Module(), w, g)
+ }
+ }
+
+ // expectStaticLinkDep verifies that the from module links against the to module as a
+ // static library.
+ expectStaticLinkDep := func(from, to android.TestingModule) {
+ t.Helper()
+ fromLink := from.Description("link")
+ toLink := to.Description("static link")
+
+ if g, w := fromLink.Implicits.Strings(), toLink.Output.String(); !android.InList(w, g) {
+ t.Errorf("%s should link against %s, expected %q, got %q",
+ from.Module(), to.Module(), w, g)
+ }
+
+ }
+
+ // expectInstallDep verifies that the install rule of the from module depends on the
+ // install rule of the to module.
+ expectInstallDep := func(from, to android.TestingModule) {
+ t.Helper()
+ fromInstalled := from.Description("install")
+ toInstalled := to.Description("install")
+
+ // combine implicits and order-only dependencies, host uses implicit but device uses
+ // order-only.
+ got := append(fromInstalled.Implicits.Strings(), fromInstalled.OrderOnly.Strings()...)
+ want := toInstalled.Output.String()
+ if !android.InList(want, got) {
+ t.Errorf("%s installation should depend on %s, expected %q, got %q",
+ from.Module(), to.Module(), want, got)
+ }
+ }
+
+ expectSharedLinkDep(binWithAsan, libShared)
+ expectSharedLinkDep(binWithAsan, libAsan)
+ expectSharedLinkDep(libShared, libTransitive)
+ expectSharedLinkDep(libAsan, libTransitive)
+
+ expectStaticLinkDep(binWithAsan, libStaticAsanVariant)
+ expectStaticLinkDep(binWithAsan, libNoAsan)
+
+ expectInstallDep(binWithAsan, libShared)
+ expectInstallDep(binWithAsan, libAsan)
+ expectInstallDep(binWithAsan, libTransitive)
+ expectInstallDep(libShared, libTransitive)
+ expectInstallDep(libAsan, libTransitive)
+
+ expectSharedLinkDep(binNoAsan, libShared)
+ expectSharedLinkDep(binNoAsan, libAsan)
+ expectSharedLinkDep(libShared, libTransitive)
+ expectSharedLinkDep(libAsan, libTransitive)
+
+ expectStaticLinkDep(binNoAsan, libStaticNoAsanVariant)
+ expectStaticLinkDep(binNoAsan, libNoAsan)
+
+ expectInstallDep(binNoAsan, libShared)
+ expectInstallDep(binNoAsan, libAsan)
+ expectInstallDep(binNoAsan, libTransitive)
+ expectInstallDep(libShared, libTransitive)
+ expectInstallDep(libAsan, libTransitive)
+ }
+
+ t.Run("host", func(t *testing.T) { check(t, result, result.Config.BuildOSTarget.String()) })
+ t.Run("device", func(t *testing.T) { check(t, result, "android_arm64_armv8-a") })
+}