Merge changes Ia7deed13,I7378a46f

* changes:
  Add support for Rust C libraries.
  Add a common interface for cc linkable libraries.
diff --git a/android/config.go b/android/config.go
index 90e7ed1..63994e6 100644
--- a/android/config.go
+++ b/android/config.go
@@ -212,9 +212,9 @@
 	config := &config{
 		productVariables: productVariables{
 			DeviceName:                  stringPtr("test_device"),
-			Platform_sdk_version:        intPtr(26),
+			Platform_sdk_version:        intPtr(30),
 			DeviceSystemSdkVersions:     []string{"14", "15"},
-			Platform_systemsdk_versions: []string{"25", "26"},
+			Platform_systemsdk_versions: []string{"29", "30"},
 			AAPTConfig:                  []string{"normal", "large", "xlarge", "hdpi", "xhdpi", "xxhdpi"},
 			AAPTPreferredConfig:         stringPtr("xhdpi"),
 			AAPTCharacteristics:         stringPtr("nosdcard"),
diff --git a/androidmk/androidmk/android.go b/androidmk/androidmk/android.go
index be52879..0082d8b 100644
--- a/androidmk/androidmk/android.go
+++ b/androidmk/androidmk/android.go
@@ -198,6 +198,7 @@
 			"LOCAL_EXPORT_PACKAGE_RESOURCES":   "export_package_resources",
 			"LOCAL_PRIVILEGED_MODULE":          "privileged",
 			"LOCAL_AAPT_INCLUDE_ALL_RESOURCES": "aapt_include_all_resources",
+			"LOCAL_DONT_MERGE_MANIFESTS":       "dont_merge_manifests",
 			"LOCAL_USE_EMBEDDED_NATIVE_LIBS":   "use_embedded_native_libs",
 			"LOCAL_USE_EMBEDDED_DEX":           "use_embedded_dex",
 
diff --git a/apex/apex.go b/apex/apex.go
index 629cbbf..a421850 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -1374,6 +1374,8 @@
 			copyCommands = append(copyCommands, "ln -s "+filepath.Base(dest)+" "+symlinkDest)
 		}
 	}
+	emitCommands = append(emitCommands, "sort -o "+imageContentFile.String()+" "+imageContentFile.String())
+
 	implicitInputs := append(android.Paths(nil), filesToCopy...)
 	implicitInputs = append(implicitInputs, a.manifestOut)
 
diff --git a/cc/androidmk.go b/cc/androidmk.go
index c0b8997..54cd722 100644
--- a/cc/androidmk.go
+++ b/cc/androidmk.go
@@ -317,6 +317,11 @@
 			filepath.Dir(fuzz.dictionary.String())+":"+fuzz.dictionary.Base())
 	}
 
+	if fuzz.config != nil {
+		fuzzFiles = append(fuzzFiles,
+			filepath.Dir(fuzz.config.String())+":config.json")
+	}
+
 	if len(fuzzFiles) > 0 {
 		ret.Extra = append(ret.Extra, func(w io.Writer, outputFile android.Path) {
 			fmt.Fprintln(w, "LOCAL_TEST_DATA := "+strings.Join(fuzzFiles, " "))
diff --git a/cc/fuzz.go b/cc/fuzz.go
index 512fdaf..2c3b973 100644
--- a/cc/fuzz.go
+++ b/cc/fuzz.go
@@ -15,6 +15,7 @@
 package cc
 
 import (
+	"encoding/json"
 	"path/filepath"
 	"strings"
 
@@ -24,12 +25,35 @@
 	"android/soong/cc/config"
 )
 
+type FuzzConfig struct {
+	// Email address of people to CC on bugs or contact about this fuzz target.
+	Cc []string `json:"cc,omitempty"`
+	// Boolean specifying whether to disable the fuzz target from running
+	// automatically in continuous fuzzing infrastructure.
+	Disable *bool `json:"disable,omitempty"`
+	// Component in Google's bug tracking system that bugs should be filed to.
+	Componentid *int64 `json:"componentid,omitempty"`
+	// Hotlists in Google's bug tracking system that bugs should be marked with.
+	Hotlists []string `json:"hotlists,omitempty"`
+}
+
+func (f *FuzzConfig) String() string {
+	b, err := json.Marshal(f)
+	if err != nil {
+		panic(err)
+	}
+
+	return string(b)
+}
+
 type FuzzProperties struct {
 	// Optional list of seed files to be installed to the fuzz target's output
 	// directory.
 	Corpus []string `android:"path"`
 	// Optional dictionary to be installed to the fuzz target's output directory.
 	Dictionary *string `android:"path"`
+	// Config for running the target on fuzzing infrastructure.
+	Fuzz_config *FuzzConfig
 }
 
 func init() {
@@ -57,6 +81,7 @@
 	dictionary            android.Path
 	corpus                android.Paths
 	corpusIntermediateDir android.Path
+	config                android.Path
 }
 
 func (fuzz *fuzzBinary) linkerProps() []interface{} {
@@ -122,6 +147,19 @@
 				fuzz.dictionary.String())
 		}
 	}
+
+	if fuzz.Properties.Fuzz_config != nil {
+		configPath := android.PathForModuleOut(ctx, "config").Join(ctx, "config.txt")
+		ctx.Build(pctx, android.BuildParams{
+			Rule:        android.WriteFile,
+			Description: "fuzzer infrastructure configuration",
+			Output:      configPath,
+			Args: map[string]string{
+				"content": fuzz.Properties.Fuzz_config.String(),
+			},
+		})
+		fuzz.config = configPath
+	}
 }
 
 func NewFuzz(hod android.HostOrDeviceSupported) *Module {
@@ -234,6 +272,12 @@
 			archDirs[archDir] = append(archDirs[archDir],
 				fileToZip{fuzzModule.dictionary, ccModule.Name()})
 		}
+
+		// Additional fuzz config.
+		if fuzzModule.config != nil {
+			archDirs[archDir] = append(archDirs[archDir],
+				fileToZip{fuzzModule.config, ccModule.Name()})
+		}
 	})
 
 	for archDir, filesToZip := range archDirs {
diff --git a/java/aar.go b/java/aar.go
index 6426ac3..afe860c 100644
--- a/java/aar.go
+++ b/java/aar.go
@@ -72,6 +72,9 @@
 
 	// paths to additional manifest files to merge with main manifest.
 	Additional_manifests []string `android:"path"`
+
+	// do not include AndroidManifest from dependent libraries
+	Dont_merge_manifests *bool
 }
 
 type aapt struct {
@@ -225,7 +228,7 @@
 	a.transitiveManifestPaths = append(android.Paths{manifestPath}, additionalManifests...)
 	a.transitiveManifestPaths = append(a.transitiveManifestPaths, transitiveStaticLibManifests...)
 
-	if len(a.transitiveManifestPaths) > 1 {
+	if len(a.transitiveManifestPaths) > 1 && !Bool(a.aaptProperties.Dont_merge_manifests) {
 		a.mergedManifestFile = manifestMerger(ctx, a.transitiveManifestPaths[0], a.transitiveManifestPaths[1:], a.isLibrary)
 		if !a.isLibrary {
 			// Only use the merged manifest for applications.  For libraries, the transitive closure of manifests
@@ -535,6 +538,10 @@
 	return a.sdkVersion()
 }
 
+func (a *AARImport) javaVersion() string {
+	return ""
+}
+
 var _ AndroidLibraryDependency = (*AARImport)(nil)
 
 func (a *AARImport) ExportPackage() android.Path {
diff --git a/java/builder.go b/java/builder.go
index 0a5c79b..169d853 100644
--- a/java/builder.go
+++ b/java/builder.go
@@ -182,15 +182,16 @@
 }
 
 type javaBuilderFlags struct {
-	javacFlags    string
-	bootClasspath classpath
-	classpath     classpath
-	processorPath classpath
-	processor     string
-	systemModules *systemModules
-	aidlFlags     string
-	aidlDeps      android.Paths
-	javaVersion   string
+	javacFlags     string
+	bootClasspath  classpath
+	classpath      classpath
+	java9Classpath classpath
+	processorPath  classpath
+	processor      string
+	systemModules  *systemModules
+	aidlFlags      string
+	aidlDeps       android.Paths
+	javaVersion    javaVersion
 
 	errorProneExtraJavacFlags string
 	errorProneProcessorPath   classpath
@@ -239,7 +240,7 @@
 	deps = append(deps, srcJars...)
 
 	var bootClasspath string
-	if flags.javaVersion == "1.9" {
+	if flags.javaVersion.usesJavaModules() {
 		var systemModuleDeps android.Paths
 		bootClasspath, systemModuleDeps = flags.systemModules.FormJavaSystemModulesPath(ctx.Device())
 		deps = append(deps, systemModuleDeps...)
@@ -279,7 +280,7 @@
 				"bootClasspath": bootClasspath,
 				"classpath":     flags.classpath.FormJavaClassPath("-classpath"),
 				"javacFlags":    flags.javacFlags,
-				"javaVersion":   flags.javaVersion,
+				"javaVersion":   flags.javaVersion.String(),
 				"outDir":        android.PathForModuleOut(ctx, "javac", "classes.xref").String(),
 				"processorpath": flags.processorPath.FormJavaClassPath("-processorpath"),
 				"processor":     processor,
@@ -294,18 +295,29 @@
 
 	var deps android.Paths
 	deps = append(deps, srcJars...)
-	deps = append(deps, flags.bootClasspath...)
-	deps = append(deps, flags.classpath...)
+
+	classpath := flags.classpath
 
 	var bootClasspath string
-	if len(flags.bootClasspath) == 0 && ctx.Device() {
-		// explicitly specify -bootclasspath "" if the bootclasspath is empty to
-		// ensure java does not fall back to the default bootclasspath.
-		bootClasspath = `--bootclasspath ""`
+	if flags.javaVersion.usesJavaModules() {
+		var systemModuleDeps android.Paths
+		bootClasspath, systemModuleDeps = flags.systemModules.FormTurbineSystemModulesPath(ctx.Device())
+		deps = append(deps, systemModuleDeps...)
+		classpath = append(flags.java9Classpath, classpath...)
 	} else {
-		bootClasspath = strings.Join(flags.bootClasspath.FormTurbineClasspath("--bootclasspath "), " ")
+		deps = append(deps, flags.bootClasspath...)
+		if len(flags.bootClasspath) == 0 && ctx.Device() {
+			// explicitly specify -bootclasspath "" if the bootclasspath is empty to
+			// ensure turbine does not fall back to the default bootclasspath.
+			bootClasspath = `--bootclasspath ""`
+		} else {
+			bootClasspath = strings.Join(flags.bootClasspath.FormTurbineClasspath("--bootclasspath "), " ")
+		}
 	}
 
+	deps = append(deps, classpath...)
+	deps = append(deps, flags.processorPath...)
+
 	ctx.Build(pctx, android.BuildParams{
 		Rule:        turbine,
 		Description: "turbine",
@@ -316,9 +328,9 @@
 			"javacFlags":    flags.javacFlags,
 			"bootClasspath": bootClasspath,
 			"srcJars":       strings.Join(srcJars.Strings(), " "),
-			"classpath":     strings.Join(flags.classpath.FormTurbineClasspath("--classpath "), " "),
+			"classpath":     strings.Join(classpath.FormTurbineClasspath("--classpath "), " "),
 			"outDir":        android.PathForModuleOut(ctx, "turbine", "classes").String(),
-			"javaVersion":   flags.javaVersion,
+			"javaVersion":   flags.javaVersion.String(),
 		},
 	})
 }
@@ -339,11 +351,14 @@
 
 	deps = append(deps, srcJars...)
 
+	classpath := flags.classpath
+
 	var bootClasspath string
-	if flags.javaVersion == "1.9" {
+	if flags.javaVersion.usesJavaModules() {
 		var systemModuleDeps android.Paths
 		bootClasspath, systemModuleDeps = flags.systemModules.FormJavaSystemModulesPath(ctx.Device())
 		deps = append(deps, systemModuleDeps...)
+		classpath = append(flags.java9Classpath, classpath...)
 	} else {
 		deps = append(deps, flags.bootClasspath...)
 		if len(flags.bootClasspath) == 0 && ctx.Device() {
@@ -355,7 +370,7 @@
 		}
 	}
 
-	deps = append(deps, flags.classpath...)
+	deps = append(deps, classpath...)
 	deps = append(deps, flags.processorPath...)
 
 	processor := "-proc:none"
@@ -381,14 +396,14 @@
 		Args: map[string]string{
 			"javacFlags":    flags.javacFlags,
 			"bootClasspath": bootClasspath,
-			"classpath":     flags.classpath.FormJavaClassPath("-classpath"),
+			"classpath":     classpath.FormJavaClassPath("-classpath"),
 			"processorpath": flags.processorPath.FormJavaClassPath("-processorpath"),
 			"processor":     processor,
 			"srcJars":       strings.Join(srcJars.Strings(), " "),
 			"srcJarDir":     android.PathForModuleOut(ctx, intermediatesDir, srcJarDir).String(),
 			"outDir":        android.PathForModuleOut(ctx, intermediatesDir, outDir).String(),
 			"annoDir":       android.PathForModuleOut(ctx, intermediatesDir, annoDir).String(),
-			"javaVersion":   flags.javaVersion,
+			"javaVersion":   flags.javaVersion.String(),
 		},
 	})
 }
@@ -550,9 +565,9 @@
 	deps android.Paths
 }
 
-// Returns a --system argument in the form javac expects with -source 1.9.  If forceEmpty is true,
-// returns --system=none if the list is empty to ensure javac does not fall back to the default
-// system modules.
+// Returns a --system argument in the form javac expects with -source 1.9 and the list of files to
+// depend on.  If forceEmpty is true, returns --system=none if the list is empty to ensure javac
+// does not fall back to the default system modules.
 func (x *systemModules) FormJavaSystemModulesPath(forceEmpty bool) (string, android.Paths) {
 	if x != nil {
 		return "--system=" + x.dir.String(), x.deps
@@ -562,3 +577,16 @@
 		return "", nil
 	}
 }
+
+// Returns a --system argument in the form turbine expects with -source 1.9 and the list of files to
+// depend on.  If forceEmpty is true, returns --bootclasspath "" if the list is empty to ensure turbine
+// does not fall back to the default bootclasspath.
+func (x *systemModules) FormTurbineSystemModulesPath(forceEmpty bool) (string, android.Paths) {
+	if x != nil {
+		return "--system " + x.dir.String(), x.deps
+	} else if forceEmpty {
+		return `--bootclasspath ""`, nil
+	} else {
+		return "", nil
+	}
+}
diff --git a/java/droiddoc.go b/java/droiddoc.go
index 1091331..6f3b152 100644
--- a/java/droiddoc.go
+++ b/java/droiddoc.go
@@ -422,21 +422,16 @@
 func (j *Javadoc) addDeps(ctx android.BottomUpMutatorContext) {
 	if ctx.Device() {
 		sdkDep := decodeSdkDep(ctx, sdkContext(j))
-		if sdkDep.hasStandardLibs() {
-			if sdkDep.useDefaultLibs {
-				ctx.AddVariationDependencies(nil, bootClasspathTag, config.DefaultBootclasspathLibraries...)
-				ctx.AddVariationDependencies(nil, systemModulesTag, config.DefaultSystemModules)
-				if sdkDep.hasFrameworkLibs() {
-					ctx.AddVariationDependencies(nil, libTag, config.DefaultLibraries...)
-				}
-			} else if sdkDep.useModule {
-				ctx.AddVariationDependencies(nil, systemModulesTag, sdkDep.systemModules)
-				ctx.AddVariationDependencies(nil, bootClasspathTag, sdkDep.modules...)
+		if sdkDep.useDefaultLibs {
+			ctx.AddVariationDependencies(nil, bootClasspathTag, config.DefaultBootclasspathLibraries...)
+			ctx.AddVariationDependencies(nil, systemModulesTag, config.DefaultSystemModules)
+			if sdkDep.hasFrameworkLibs() {
+				ctx.AddVariationDependencies(nil, libTag, config.DefaultLibraries...)
 			}
-		} else if sdkDep.systemModules != "" {
-			// Add the system modules to both the system modules and bootclasspath.
+		} else if sdkDep.useModule {
+			ctx.AddVariationDependencies(nil, bootClasspathTag, sdkDep.bootclasspath...)
 			ctx.AddVariationDependencies(nil, systemModulesTag, sdkDep.systemModules)
-			ctx.AddVariationDependencies(nil, bootClasspathTag, sdkDep.systemModules)
+			ctx.AddVariationDependencies(nil, java9LibTag, sdkDep.java9Classpath...)
 		}
 	}
 
@@ -511,7 +506,8 @@
 
 	sdkDep := decodeSdkDep(ctx, sdkContext(j))
 	if sdkDep.invalidVersion {
-		ctx.AddMissingDependencies(sdkDep.modules)
+		ctx.AddMissingDependencies(sdkDep.bootclasspath)
+		ctx.AddMissingDependencies(sdkDep.java9Classpath)
 	} else if sdkDep.useFiles {
 		deps.bootClasspath = append(deps.bootClasspath, sdkDep.jars...)
 	}
@@ -544,6 +540,13 @@
 			default:
 				ctx.ModuleErrorf("depends on non-java module %q", otherName)
 			}
+		case java9LibTag:
+			switch dep := module.(type) {
+			case Dependency:
+				deps.java9Classpath = append(deps.java9Classpath, dep.HeaderJars()...)
+			default:
+				ctx.ModuleErrorf("depends on non-java module %q", otherName)
+			}
 		case systemModulesTag:
 			if deps.systemModules != nil {
 				panic("Found two system module dependencies")
@@ -665,7 +668,7 @@
 	cmd := javadocSystemModulesCmd(ctx, rule, j.srcFiles, outDir, srcJarDir, srcJarList,
 		deps.systemModules, deps.classpath, j.sourcepaths)
 
-	cmd.FlagWithArg("-source ", javaVersion).
+	cmd.FlagWithArg("-source ", javaVersion.String()).
 		Flag("-J-Xmx1024m").
 		Flag("-XDignore.symbol.file").
 		Flag("-Xdoclint:none")
@@ -1432,12 +1435,12 @@
 	}
 }
 
-func metalavaCmd(ctx android.ModuleContext, rule *android.RuleBuilder, javaVersion string, srcs android.Paths,
+func metalavaCmd(ctx android.ModuleContext, rule *android.RuleBuilder, javaVersion javaVersion, srcs android.Paths,
 	srcJarList android.Path, bootclasspath, classpath classpath, sourcepaths android.Paths) *android.RuleBuilderCommand {
 	cmd := rule.Command().BuiltTool(ctx, "metalava").
 		Flag(config.JavacVmFlags).
 		FlagWithArg("-encoding ", "UTF-8").
-		FlagWithArg("-source ", javaVersion).
+		FlagWithArg("-source ", javaVersion.String()).
 		FlagWithRspFileInputList("@", srcs).
 		FlagWithInput("@", srcJarList)
 
diff --git a/java/java.go b/java/java.go
index 9ed7621..947aa8c 100644
--- a/java/java.go
+++ b/java/java.go
@@ -140,10 +140,10 @@
 	Use_tools_jar *bool
 
 	Openjdk9 struct {
-		// List of source files that should only be used when passing -source 1.9
+		// List of source files that should only be used when passing -source 1.9 or higher
 		Srcs []string `android:"path"`
 
-		// List of javac flags that should only be used when passing -source 1.9
+		// List of javac flags that should only be used when passing -source 1.9 or higher
 		Javacflags []string
 	}
 
@@ -433,6 +433,7 @@
 var (
 	staticLibTag          = dependencyTag{name: "staticlib"}
 	libTag                = dependencyTag{name: "javalib"}
+	java9LibTag           = dependencyTag{name: "java9lib"}
 	pluginTag             = dependencyTag{name: "plugin"}
 	bootClasspathTag      = dependencyTag{name: "bootclasspath"}
 	systemModulesTag      = dependencyTag{name: "system modules"}
@@ -461,12 +462,16 @@
 type sdkDep struct {
 	useModule, useFiles, useDefaultLibs, invalidVersion bool
 
-	modules []string
+	// The modules that will be added to the bootclasspath when targeting 1.8 or lower
+	bootclasspath []string
 
 	// The default system modules to use. Will be an empty string if no system
 	// modules are to be used.
 	systemModules string
 
+	// The modules that will be added ot the classpath when targeting 1.9 or higher
+	java9Classpath []string
+
 	frameworkResModule string
 
 	jars android.Paths
@@ -524,26 +529,22 @@
 func (j *Module) deps(ctx android.BottomUpMutatorContext) {
 	if ctx.Device() {
 		sdkDep := decodeSdkDep(ctx, sdkContext(j))
-		if sdkDep.hasStandardLibs() {
-			if sdkDep.useDefaultLibs {
-				ctx.AddVariationDependencies(nil, bootClasspathTag, config.DefaultBootclasspathLibraries...)
-				ctx.AddVariationDependencies(nil, systemModulesTag, config.DefaultSystemModules)
-				if sdkDep.hasFrameworkLibs() {
-					ctx.AddVariationDependencies(nil, libTag, config.DefaultLibraries...)
-				}
-			} else if sdkDep.useModule {
-				ctx.AddVariationDependencies(nil, systemModulesTag, sdkDep.systemModules)
-				ctx.AddVariationDependencies(nil, bootClasspathTag, sdkDep.modules...)
-				if j.deviceProperties.EffectiveOptimizeEnabled() {
-					ctx.AddVariationDependencies(nil, proguardRaiseTag, config.DefaultBootclasspathLibraries...)
-					ctx.AddVariationDependencies(nil, proguardRaiseTag, config.DefaultLibraries...)
-				}
+		if sdkDep.useDefaultLibs {
+			ctx.AddVariationDependencies(nil, bootClasspathTag, config.DefaultBootclasspathLibraries...)
+			ctx.AddVariationDependencies(nil, systemModulesTag, config.DefaultSystemModules)
+			if sdkDep.hasFrameworkLibs() {
+				ctx.AddVariationDependencies(nil, libTag, config.DefaultLibraries...)
 			}
-		} else if sdkDep.systemModules != "" {
-			// Add the system modules to both the system modules and bootclasspath.
+		} else if sdkDep.useModule {
+			ctx.AddVariationDependencies(nil, bootClasspathTag, sdkDep.bootclasspath...)
 			ctx.AddVariationDependencies(nil, systemModulesTag, sdkDep.systemModules)
-			ctx.AddVariationDependencies(nil, bootClasspathTag, sdkDep.systemModules)
+			ctx.AddVariationDependencies(nil, java9LibTag, sdkDep.java9Classpath...)
+			if j.deviceProperties.EffectiveOptimizeEnabled() && sdkDep.hasStandardLibs() {
+				ctx.AddVariationDependencies(nil, proguardRaiseTag, config.DefaultBootclasspathLibraries...)
+				ctx.AddVariationDependencies(nil, proguardRaiseTag, config.DefaultLibraries...)
+			}
 		}
+
 		if ctx.ModuleName() == "android_stubs_current" ||
 			ctx.ModuleName() == "android_system_stubs_current" ||
 			ctx.ModuleName() == "android_test_stubs_current" {
@@ -635,6 +636,7 @@
 
 type deps struct {
 	classpath          classpath
+	java9Classpath     classpath
 	bootClasspath      classpath
 	processorPath      classpath
 	processorClasses   []string
@@ -744,7 +746,8 @@
 	if ctx.Device() {
 		sdkDep := decodeSdkDep(ctx, sdkContext(j))
 		if sdkDep.invalidVersion {
-			ctx.AddMissingDependencies(sdkDep.modules)
+			ctx.AddMissingDependencies(sdkDep.bootclasspath)
+			ctx.AddMissingDependencies(sdkDep.java9Classpath)
 		} else if sdkDep.useFiles {
 			// sdkDep.jar is actually equivalent to turbine header.jar.
 			deps.classpath = append(deps.classpath, sdkDep.jars...)
@@ -792,6 +795,8 @@
 				// sdk lib names from dependencies are re-exported
 				j.exportedSdkLibs = append(j.exportedSdkLibs, dep.ExportedSdkLibs()...)
 				deps.aidlIncludeDirs = append(deps.aidlIncludeDirs, dep.AidlIncludeDirs()...)
+			case java9LibTag:
+				deps.java9Classpath = append(deps.java9Classpath, dep.HeaderJars()...)
 			case staticLibTag:
 				deps.classpath = append(deps.classpath, dep.HeaderJars()...)
 				deps.staticJars = append(deps.staticJars, dep.ImplementationJars()...)
@@ -865,8 +870,7 @@
 	return deps
 }
 
-func getJavaVersion(ctx android.ModuleContext, javaVersion string, sdkContext sdkContext) string {
-	var ret string
+func getJavaVersion(ctx android.ModuleContext, javaVersion string, sdkContext sdkContext) javaVersion {
 	v := sdkContext.sdkVersion()
 	// For PDK builds, use the latest SDK version instead of "current"
 	if ctx.Config().IsPdkBuild() &&
@@ -884,41 +888,65 @@
 		ctx.PropertyErrorf("sdk_version", "%s", err)
 	}
 	if javaVersion != "" {
-		ret = normalizeJavaVersion(ctx, javaVersion)
+		return normalizeJavaVersion(ctx, javaVersion)
 	} else if ctx.Device() && sdk <= 23 {
-		ret = "1.7"
+		return JAVA_VERSION_7
 	} else if ctx.Device() && sdk <= 29 {
-		ret = "1.8"
-	} else if ctx.Device() &&
-		sdkContext.sdkVersion() != "" &&
-		sdkContext.sdkVersion() != "none" &&
-		sdkContext.sdkVersion() != "core_platform" &&
-		sdk == android.FutureApiLevel {
-		// TODO(ccross): once we generate stubs we should be able to use 1.9 for sdk_version: "current"
-		ret = "1.8"
+		return JAVA_VERSION_8
+	} else if ctx.Device() && ctx.Config().UnbundledBuildUsePrebuiltSdks() {
+		// TODO(b/142896162): once we have prebuilt system modules we can use 1.9 for unbundled builds
+		return JAVA_VERSION_8
 	} else {
-		ret = "1.9"
+		return JAVA_VERSION_9
 	}
-
-	return ret
 }
 
-func normalizeJavaVersion(ctx android.ModuleContext, javaVersion string) string {
+type javaVersion int
+
+const (
+	JAVA_VERSION_UNSUPPORTED = 0
+	JAVA_VERSION_6           = 6
+	JAVA_VERSION_7           = 7
+	JAVA_VERSION_8           = 8
+	JAVA_VERSION_9           = 9
+)
+
+func (v javaVersion) String() string {
+	switch v {
+	case JAVA_VERSION_6:
+		return "1.6"
+	case JAVA_VERSION_7:
+		return "1.7"
+	case JAVA_VERSION_8:
+		return "1.8"
+	case JAVA_VERSION_9:
+		return "1.9"
+	default:
+		return "unsupported"
+	}
+}
+
+// Returns true if javac targeting this version uses system modules instead of a bootclasspath.
+func (v javaVersion) usesJavaModules() bool {
+	return v >= 9
+}
+
+func normalizeJavaVersion(ctx android.BaseModuleContext, javaVersion string) javaVersion {
 	switch javaVersion {
 	case "1.6", "6":
-		return "1.6"
+		return JAVA_VERSION_6
 	case "1.7", "7":
-		return "1.7"
+		return JAVA_VERSION_7
 	case "1.8", "8":
-		return "1.8"
+		return JAVA_VERSION_8
 	case "1.9", "9":
-		return "1.9"
+		return JAVA_VERSION_9
 	case "10", "11":
 		ctx.PropertyErrorf("java_version", "Java language levels above 9 are not supported")
-		return "unsupported"
+		return JAVA_VERSION_UNSUPPORTED
 	default:
 		ctx.PropertyErrorf("java_version", "Unrecognized Java language level")
-		return "unrecognized"
+		return JAVA_VERSION_UNSUPPORTED
 	}
 }
 
@@ -931,7 +959,7 @@
 
 	// javac flags.
 	javacFlags := j.properties.Javacflags
-	if flags.javaVersion == "1.9" {
+	if flags.javaVersion.usesJavaModules() {
 		javacFlags = append(javacFlags, j.properties.Openjdk9.Javacflags...)
 	}
 	if ctx.Config().MinimizeJavaDebugInfo() {
@@ -959,13 +987,13 @@
 	// classpath
 	flags.bootClasspath = append(flags.bootClasspath, deps.bootClasspath...)
 	flags.classpath = append(flags.classpath, deps.classpath...)
+	flags.java9Classpath = append(flags.java9Classpath, deps.java9Classpath...)
 	flags.processorPath = append(flags.processorPath, deps.processorPath...)
 
 	flags.processor = strings.Join(deps.processorClasses, ",")
 
-	if len(flags.bootClasspath) == 0 && ctx.Host() && flags.javaVersion != "1.9" &&
-		decodeSdkDep(ctx, sdkContext(j)).hasStandardLibs() &&
-		inList(flags.javaVersion, []string{"1.6", "1.7", "1.8"}) {
+	if len(flags.bootClasspath) == 0 && ctx.Host() && !flags.javaVersion.usesJavaModules() &&
+		decodeSdkDep(ctx, sdkContext(j)).hasStandardLibs() {
 		// Give host-side tools a version of OpenJDK's standard libraries
 		// close to what they're targeting. As of Dec 2017, AOSP is only
 		// bundling OpenJDK 8 and 9, so nothing < 8 is available.
@@ -989,7 +1017,7 @@
 		}
 	}
 
-	if j.properties.Patch_module != nil && flags.javaVersion == "1.9" {
+	if j.properties.Patch_module != nil && flags.javaVersion.usesJavaModules() {
 		// Manually specify build directory in case it is not under the repo root.
 		// (javac doesn't seem to expand into symbolc links when searching for patch-module targets, so
 		// just adding a symlink under the root doesn't help.)
@@ -1022,7 +1050,7 @@
 	deps := j.collectDeps(ctx)
 	flags := j.collectBuilderFlags(ctx, deps)
 
-	if flags.javaVersion == "1.9" {
+	if flags.javaVersion.usesJavaModules() {
 		j.properties.Srcs = append(j.properties.Srcs, j.properties.Openjdk9.Srcs...)
 	}
 	srcFiles := android.PathsForModuleSrcExcludes(ctx, j.properties.Srcs, j.properties.Exclude_srcs)
diff --git a/java/java_test.go b/java/java_test.go
index 3767d1b..a6ae503 100644
--- a/java/java_test.go
+++ b/java/java_test.go
@@ -148,9 +148,9 @@
 		"prebuilts/sdk/17/public/android.jar":         nil,
 		"prebuilts/sdk/17/public/framework.aidl":      nil,
 		"prebuilts/sdk/17/system/android.jar":         nil,
-		"prebuilts/sdk/25/public/android.jar":         nil,
-		"prebuilts/sdk/25/public/framework.aidl":      nil,
-		"prebuilts/sdk/25/system/android.jar":         nil,
+		"prebuilts/sdk/29/public/android.jar":         nil,
+		"prebuilts/sdk/29/public/framework.aidl":      nil,
+		"prebuilts/sdk/29/system/android.jar":         nil,
 		"prebuilts/sdk/current/core/android.jar":      nil,
 		"prebuilts/sdk/current/public/android.jar":    nil,
 		"prebuilts/sdk/current/public/framework.aidl": nil,
diff --git a/java/kotlin.go b/java/kotlin.go
index 8306907..f8ae229 100644
--- a/java/kotlin.go
+++ b/java/kotlin.go
@@ -141,8 +141,8 @@
 	}
 
 	encodedJavacFlags := kaptEncodeFlags([][2]string{
-		{"-source", flags.javaVersion},
-		{"-target", flags.javaVersion},
+		{"-source", flags.javaVersion.String()},
+		{"-target", flags.javaVersion.String()},
 	})
 
 	kotlinName := filepath.Join(ctx.ModuleDir(), ctx.ModuleSubDir(), ctx.ModuleName())
diff --git a/java/sdk.go b/java/sdk.go
index c6a9a73..6f0f432 100644
--- a/java/sdk.go
+++ b/java/sdk.go
@@ -122,7 +122,7 @@
 		if (!jarPath.Valid() || !aidlPath.Valid()) && ctx.Config().AllowMissingDependencies() {
 			return sdkDep{
 				invalidVersion: true,
-				modules:        []string{fmt.Sprintf("sdk_%s_%s_android", api, v)},
+				bootclasspath:  []string{fmt.Sprintf("sdk_%s_%s_android", api, v)},
 			}
 		}
 
@@ -144,20 +144,14 @@
 	}
 
 	toModule := func(m, r string, aidl android.Path) sdkDep {
-		ret := sdkDep{
+		return sdkDep{
 			useModule:          true,
-			modules:            []string{m, config.DefaultLambdaStubsLibrary},
-			systemModules:      m + "_system_modules",
+			bootclasspath:      []string{m, config.DefaultLambdaStubsLibrary},
+			systemModules:      "core-current-stubs-system-modules",
+			java9Classpath:     []string{m},
 			frameworkResModule: r,
 			aidl:               android.OptionalPathForPath(aidl),
 		}
-
-		if m == "core.current.stubs" {
-			ret.systemModules = "core-current-stubs-system-modules"
-			// core_current does not include framework classes.
-			ret.noFrameworksLibs = true
-		}
-		return ret
 	}
 
 	// Ensures that the specificed system SDK version is one of BOARD_SYSTEMSDK_VERSIONS (for vendor apks)
@@ -192,13 +186,16 @@
 			ctx.PropertyErrorf("sdk_version",
 				`system_modules is required to be set to a non-empty value when sdk_version is "none", did you mean sdk_version: "core_platform"?`)
 		} else if systemModules == "none" {
-			// Normalize no system modules to an empty string.
-			systemModules = ""
+			return sdkDep{
+				noStandardLibs: true,
+			}
 		}
 
 		return sdkDep{
+			useModule:      true,
 			noStandardLibs: true,
 			systemModules:  systemModules,
+			bootclasspath:  []string{systemModules},
 		}
 	case "core_platform":
 		return sdkDep{
diff --git a/java/sdk_test.go b/java/sdk_test.go
index fd47d81..525c898 100644
--- a/java/sdk_test.go
+++ b/java/sdk_test.go
@@ -28,174 +28,188 @@
 
 func TestClasspath(t *testing.T) {
 	var classpathTestcases = []struct {
-		name          string
-		unbundled     bool
-		pdk           bool
-		moduleType    string
-		host          android.OsClass
-		properties    string
-		bootclasspath []string
-		system        string
-		classpath     []string
-		aidl          string
+		name       string
+		unbundled  bool
+		pdk        bool
+		moduleType string
+		host       android.OsClass
+		properties string
+
+		// for java 8
+		bootclasspath  []string
+		java8classpath []string
+
+		// for java 9
+		system         string
+		java9classpath []string
+
+		forces8 bool // if set, javac will always be called with java 8 arguments
+
+		aidl string
 	}{
 		{
-			name:          "default",
-			bootclasspath: config.DefaultBootclasspathLibraries,
-			system:        config.DefaultSystemModules,
-			classpath:     config.DefaultLibraries,
-			aidl:          "-Iframework/aidl",
+			name:           "default",
+			bootclasspath:  config.DefaultBootclasspathLibraries,
+			system:         config.DefaultSystemModules,
+			java8classpath: config.DefaultLibraries,
+			java9classpath: config.DefaultLibraries,
+			aidl:           "-Iframework/aidl",
 		},
 		{
-			name:          `sdk_version:"core_platform"`,
-			properties:    `sdk_version:"core_platform"`,
-			bootclasspath: config.DefaultBootclasspathLibraries,
-			system:        config.DefaultSystemModules,
-			classpath:     []string{},
-			aidl:          "",
+			name:           `sdk_version:"core_platform"`,
+			properties:     `sdk_version:"core_platform"`,
+			bootclasspath:  config.DefaultBootclasspathLibraries,
+			system:         config.DefaultSystemModules,
+			java8classpath: []string{},
+			aidl:           "",
 		},
 		{
-			name:          "blank sdk version",
-			properties:    `sdk_version: "",`,
-			bootclasspath: config.DefaultBootclasspathLibraries,
-			system:        config.DefaultSystemModules,
-			classpath:     config.DefaultLibraries,
-			aidl:          "-Iframework/aidl",
+			name:           "blank sdk version",
+			properties:     `sdk_version: "",`,
+			bootclasspath:  config.DefaultBootclasspathLibraries,
+			system:         config.DefaultSystemModules,
+			java8classpath: config.DefaultLibraries,
+			java9classpath: config.DefaultLibraries,
+			aidl:           "-Iframework/aidl",
 		},
 		{
 
-			name:          "sdk v25",
-			properties:    `sdk_version: "25",`,
-			bootclasspath: []string{`""`},
-			system:        "bootclasspath", // special value to tell 1.9 test to expect bootclasspath
-			classpath:     []string{"prebuilts/sdk/25/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
-			aidl:          "-pprebuilts/sdk/25/public/framework.aidl",
+			name:           "sdk v29",
+			properties:     `sdk_version: "29",`,
+			bootclasspath:  []string{`""`},
+			forces8:        true,
+			java8classpath: []string{"prebuilts/sdk/29/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			aidl:           "-pprebuilts/sdk/29/public/framework.aidl",
 		},
 		{
 
-			name:          "current",
-			properties:    `sdk_version: "current",`,
-			bootclasspath: []string{"android_stubs_current", "core-lambda-stubs"},
-			system:        "bootclasspath", // special value to tell 1.9 test to expect bootclasspath
-			aidl:          "-p" + buildDir + "/framework.aidl",
+			name:           "current",
+			properties:     `sdk_version: "current",`,
+			bootclasspath:  []string{"android_stubs_current", "core-lambda-stubs"},
+			system:         "core-current-stubs-system-modules",
+			java9classpath: []string{"android_stubs_current"},
+			aidl:           "-p" + buildDir + "/framework.aidl",
 		},
 		{
 
-			name:          "system_current",
-			properties:    `sdk_version: "system_current",`,
-			bootclasspath: []string{"android_system_stubs_current", "core-lambda-stubs"},
-			system:        "bootclasspath", // special value to tell 1.9 test to expect bootclasspath
-			aidl:          "-p" + buildDir + "/framework.aidl",
+			name:           "system_current",
+			properties:     `sdk_version: "system_current",`,
+			bootclasspath:  []string{"android_system_stubs_current", "core-lambda-stubs"},
+			system:         "core-current-stubs-system-modules",
+			java9classpath: []string{"android_system_stubs_current"},
+			aidl:           "-p" + buildDir + "/framework.aidl",
 		},
 		{
 
-			name:          "system_25",
-			properties:    `sdk_version: "system_25",`,
-			bootclasspath: []string{`""`},
-			system:        "bootclasspath", // special value to tell 1.9 test to expect bootclasspath
-			classpath:     []string{"prebuilts/sdk/25/system/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
-			aidl:          "-pprebuilts/sdk/25/public/framework.aidl",
+			name:           "system_29",
+			properties:     `sdk_version: "system_29",`,
+			bootclasspath:  []string{`""`},
+			forces8:        true,
+			java8classpath: []string{"prebuilts/sdk/29/system/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			aidl:           "-pprebuilts/sdk/29/public/framework.aidl",
 		},
 		{
 
-			name:          "test_current",
-			properties:    `sdk_version: "test_current",`,
-			bootclasspath: []string{"android_test_stubs_current", "core-lambda-stubs"},
-			system:        "bootclasspath", // special value to tell 1.9 test to expect bootclasspath
-			aidl:          "-p" + buildDir + "/framework.aidl",
+			name:           "test_current",
+			properties:     `sdk_version: "test_current",`,
+			bootclasspath:  []string{"android_test_stubs_current", "core-lambda-stubs"},
+			system:         "core-current-stubs-system-modules",
+			java9classpath: []string{"android_test_stubs_current"},
+			aidl:           "-p" + buildDir + "/framework.aidl",
 		},
 		{
 
-			name:          "core_current",
-			properties:    `sdk_version: "core_current",`,
-			bootclasspath: []string{"core.current.stubs", "core-lambda-stubs"},
-			system:        "bootclasspath", // special value to tell 1.9 test to expect bootclasspath
+			name:           "core_current",
+			properties:     `sdk_version: "core_current",`,
+			bootclasspath:  []string{"core.current.stubs", "core-lambda-stubs"},
+			system:         "core-current-stubs-system-modules",
+			java9classpath: []string{"core.current.stubs"},
 		},
 		{
 
-			name:          "nostdlib",
-			properties:    `sdk_version: "none", system_modules: "none"`,
-			system:        "none",
-			bootclasspath: []string{`""`},
-			classpath:     []string{},
+			name:           "nostdlib",
+			properties:     `sdk_version: "none", system_modules: "none"`,
+			system:         "none",
+			bootclasspath:  []string{`""`},
+			java8classpath: []string{},
 		},
 		{
 
-			name:          "nostdlib system_modules",
-			properties:    `sdk_version: "none", system_modules: "core-platform-api-stubs-system-modules"`,
-			system:        "core-platform-api-stubs-system-modules",
-			bootclasspath: []string{"core-platform-api-stubs-system-modules-lib"},
-			classpath:     []string{},
+			name:           "nostdlib system_modules",
+			properties:     `sdk_version: "none", system_modules: "core-platform-api-stubs-system-modules"`,
+			system:         "core-platform-api-stubs-system-modules",
+			bootclasspath:  []string{"core-platform-api-stubs-system-modules-lib"},
+			java8classpath: []string{},
 		},
 		{
 
-			name:          "host default",
-			moduleType:    "java_library_host",
-			properties:    ``,
-			host:          android.Host,
-			bootclasspath: []string{"jdk8/jre/lib/jce.jar", "jdk8/jre/lib/rt.jar"},
-			classpath:     []string{},
+			name:           "host default",
+			moduleType:     "java_library_host",
+			properties:     ``,
+			host:           android.Host,
+			bootclasspath:  []string{"jdk8/jre/lib/jce.jar", "jdk8/jre/lib/rt.jar"},
+			java8classpath: []string{},
 		},
 		{
 
-			name:          "host supported default",
-			host:          android.Host,
-			properties:    `host_supported: true,`,
-			classpath:     []string{},
-			bootclasspath: []string{"jdk8/jre/lib/jce.jar", "jdk8/jre/lib/rt.jar"},
+			name:           "host supported default",
+			host:           android.Host,
+			properties:     `host_supported: true,`,
+			java8classpath: []string{},
+			bootclasspath:  []string{"jdk8/jre/lib/jce.jar", "jdk8/jre/lib/rt.jar"},
 		},
 		{
-			name:       "host supported nostdlib",
-			host:       android.Host,
-			properties: `host_supported: true, sdk_version: "none", system_modules: "none"`,
-			classpath:  []string{},
+			name:           "host supported nostdlib",
+			host:           android.Host,
+			properties:     `host_supported: true, sdk_version: "none", system_modules: "none"`,
+			java8classpath: []string{},
 		},
 		{
 
-			name:          "unbundled sdk v25",
-			unbundled:     true,
-			properties:    `sdk_version: "25",`,
-			bootclasspath: []string{`""`},
-			system:        "bootclasspath", // special value to tell 1.9 test to expect bootclasspath
-			classpath:     []string{"prebuilts/sdk/25/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
-			aidl:          "-pprebuilts/sdk/25/public/framework.aidl",
+			name:           "unbundled sdk v29",
+			unbundled:      true,
+			properties:     `sdk_version: "29",`,
+			bootclasspath:  []string{`""`},
+			forces8:        true,
+			java8classpath: []string{"prebuilts/sdk/29/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			aidl:           "-pprebuilts/sdk/29/public/framework.aidl",
 		},
 		{
 
-			name:          "unbundled current",
-			unbundled:     true,
-			properties:    `sdk_version: "current",`,
-			bootclasspath: []string{`""`},
-			system:        "bootclasspath", // special value to tell 1.9 test to expect bootclasspath
-			classpath:     []string{"prebuilts/sdk/current/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
-			aidl:          "-pprebuilts/sdk/current/public/framework.aidl",
+			name:           "unbundled current",
+			unbundled:      true,
+			properties:     `sdk_version: "current",`,
+			bootclasspath:  []string{`""`},
+			forces8:        true,
+			java8classpath: []string{"prebuilts/sdk/current/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			aidl:           "-pprebuilts/sdk/current/public/framework.aidl",
 		},
 
 		{
-			name:          "pdk default",
-			pdk:           true,
-			bootclasspath: []string{`""`},
-			system:        "bootclasspath", // special value to tell 1.9 test to expect bootclasspath
-			classpath:     []string{"prebuilts/sdk/25/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
-			aidl:          "-pprebuilts/sdk/25/public/framework.aidl",
+			name:           "pdk default",
+			pdk:            true,
+			bootclasspath:  []string{`""`},
+			forces8:        true,
+			java8classpath: []string{"prebuilts/sdk/29/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			aidl:           "-pprebuilts/sdk/29/public/framework.aidl",
 		},
 		{
-			name:          "pdk current",
-			pdk:           true,
-			properties:    `sdk_version: "current",`,
-			bootclasspath: []string{`""`},
-			system:        "bootclasspath", // special value to tell 1.9 test to expect bootclasspath
-			classpath:     []string{"prebuilts/sdk/25/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
-			aidl:          "-pprebuilts/sdk/25/public/framework.aidl",
+			name:           "pdk current",
+			pdk:            true,
+			properties:     `sdk_version: "current",`,
+			bootclasspath:  []string{`""`},
+			forces8:        true,
+			java8classpath: []string{"prebuilts/sdk/29/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			aidl:           "-pprebuilts/sdk/29/public/framework.aidl",
 		},
 		{
-			name:          "pdk 25",
-			pdk:           true,
-			properties:    `sdk_version: "25",`,
-			bootclasspath: []string{`""`},
-			system:        "bootclasspath", // special value to tell 1.9 test to expect bootclasspath
-			classpath:     []string{"prebuilts/sdk/25/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
-			aidl:          "-pprebuilts/sdk/25/public/framework.aidl",
+			name:           "pdk 29",
+			pdk:            true,
+			properties:     `sdk_version: "29",`,
+			bootclasspath:  []string{`""`},
+			forces8:        true,
+			java8classpath: []string{"prebuilts/sdk/29/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			aidl:           "-pprebuilts/sdk/29/public/framework.aidl",
 		},
 	}
 
@@ -235,7 +249,8 @@
 			}
 
 			bootclasspath := convertModulesToPaths(testcase.bootclasspath)
-			classpath := convertModulesToPaths(testcase.classpath)
+			java8classpath := convertModulesToPaths(testcase.java8classpath)
+			java9classpath := convertModulesToPaths(testcase.java9classpath)
 
 			bc := ""
 			var bcDeps []string
@@ -246,18 +261,20 @@
 				}
 			}
 
-			c := ""
-			if len(classpath) > 0 {
-				c = "-classpath " + strings.Join(classpath, ":")
+			j8c := ""
+			if len(java8classpath) > 0 {
+				j8c = "-classpath " + strings.Join(java8classpath, ":")
+			}
+
+			j9c := ""
+			if len(java9classpath) > 0 {
+				j9c = "-classpath " + strings.Join(java9classpath, ":")
 			}
 
 			system := ""
 			var systemDeps []string
 			if testcase.system == "none" {
 				system = "--system=none"
-			} else if testcase.system == "bootclasspath" {
-				system = bc
-				systemDeps = bcDeps
 			} else if testcase.system != "" {
 				system = "--system=" + filepath.Join(buildDir, ".intermediates", testcase.system, "android_common", "system")
 				// The module-relative parts of these paths are hardcoded in system_modules.go:
@@ -280,7 +297,7 @@
 
 				got := javac.Args["bootClasspath"]
 				expected := ""
-				if isJava8 {
+				if isJava8 || testcase.forces8 {
 					expected = bc
 					deps = append(deps, bcDeps...)
 				} else {
@@ -291,11 +308,17 @@
 					t.Errorf("bootclasspath expected %q != got %q", expected, got)
 				}
 
-				got = javac.Args["classpath"]
-				if got != c {
-					t.Errorf("classpath expected %q != got %q", c, got)
+				if isJava8 || testcase.forces8 {
+					expected = j8c
+					deps = append(deps, java8classpath...)
+				} else {
+					expected = j9c
+					deps = append(deps, java9classpath...)
 				}
-				deps = append(deps, classpath...)
+				got = javac.Args["classpath"]
+				if got != expected {
+					t.Errorf("classpath expected %q != got %q", expected, got)
+				}
 
 				if !reflect.DeepEqual(javac.Implicits.Strings(), deps) {
 					t.Errorf("implicits expected %q != got %q", deps, javac.Implicits.Strings())
@@ -366,8 +389,23 @@
 				checkClasspath(t, ctx, true /* isJava8 */)
 			})
 
-			// TODO(b/142896162): Add a with PLATFORM_VERSION_CODENAME=REL, javac -source 9 -target 9, when that all works.
+			// Test again with PLATFORM_VERSION_CODENAME=REL, javac -source 9 -target 9
+			t.Run("REL + Java language level 9", func(t *testing.T) {
+				config := testConfig(nil)
+				config.TestProductVariables.Platform_sdk_codename = proptools.StringPtr("REL")
+				config.TestProductVariables.Platform_sdk_final = proptools.BoolPtr(true)
+
+				if testcase.unbundled {
+					config.TestProductVariables.Unbundled_build = proptools.BoolPtr(true)
+				}
+				if testcase.pdk {
+					config.TestProductVariables.Pdk = proptools.BoolPtr(true)
+				}
+				ctx := testContext(bp, nil)
+				run(t, ctx, config)
+
+				checkClasspath(t, ctx, false /* isJava8 */)
+			})
 		})
 	}
-
 }