Merge "Only set -Wall once."
diff --git a/bp2build/symlink_forest.go b/bp2build/symlink_forest.go
index 7d48191..818d7ae 100644
--- a/bp2build/symlink_forest.go
+++ b/bp2build/symlink_forest.go
@@ -95,13 +95,19 @@
 		return fi.IsDir()
 	}
 
-	fi2, err := os.Stat(path)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "Cannot stat '%s': %s\n", path, err)
+	fi2, statErr := os.Stat(path)
+	if statErr == nil {
+		return fi2.IsDir()
+	}
+
+	// Check if this is a dangling symlink. If so, treat it like a file, not a dir.
+	_, lstatErr := os.Lstat(path)
+	if lstatErr != nil {
+		fmt.Fprintf(os.Stderr, "Cannot stat or lstat '%s': %s\n%s\n", path, statErr, lstatErr)
 		os.Exit(1)
 	}
 
-	return fi2.IsDir()
+	return false
 }
 
 // Recursively plants a symlink forest at forestDir. The symlink tree will
diff --git a/cc/config/tidy.go b/cc/config/tidy.go
index 1f90843..826197a 100644
--- a/cc/config/tidy.go
+++ b/cc/config/tidy.go
@@ -35,14 +35,22 @@
 			"bugprone-*",
 			"cert-*",
 			"clang-diagnostic-unused-command-line-argument",
-			"google-*",
+			// Select only google-* checks that do not have thousands of warnings.
+			// Add more such checks when we clean up source code.
+			// "google-build-using-namespace",
+			// "google-default-arguments",
+			// "google-explicit-constructor",
+			// "google-global-names-in-headers",
+			// "google-runtime-int",
+			"google-build-explicit-make-pair",
+			"google-build-namespaces",
+			"google-runtime-operator",
+			"google-upgrade-*",
 			"misc-*",
 			"performance-*",
 			"portability-*",
 			"-bugprone-easily-swappable-parameters",
 			"-bugprone-narrowing-conversions",
-			"-google-readability*",
-			"-google-runtime-references",
 			"-misc-no-recursion",
 			"-misc-non-private-member-variables-in-classes",
 			"-misc-unused-parameters",
@@ -79,13 +87,10 @@
 		return strings.Join([]string{
 			"-*",
 			"clang-diagnostic-unused-command-line-argument",
-			"google*",
-			"-google-build-using-namespace",
-			"-google-default-arguments",
-			"-google-explicit-constructor",
-			"-google-readability*",
-			"-google-runtime-int",
-			"-google-runtime-references",
+			"google-build-explicit-make-pair",
+			"google-build-namespaces",
+			"google-runtime-operator",
+			"google-upgrade-*",
 		}, ",")
 	})
 
diff --git a/cc/sanitize.go b/cc/sanitize.go
index 53169de..d6fcdb2 100644
--- a/cc/sanitize.go
+++ b/cc/sanitize.go
@@ -968,23 +968,21 @@
 					return true
 				})
 			}
-		} else if sanitizeable, ok := mctx.Module().(Sanitizeable); ok {
+		} else if jniSanitizeable, ok := mctx.Module().(JniSanitizeable); ok {
 			// If it's a Java module with native dependencies through jni,
 			// set the sanitizer for them
-			if jniSanitizeable, ok := mctx.Module().(JniSanitizeable); ok {
-				if jniSanitizeable.IsSanitizerEnabledForJni(mctx, t.name()) {
-					mctx.VisitDirectDeps(func(child android.Module) {
-						if c, ok := child.(PlatformSanitizeable); ok &&
-							mctx.OtherModuleDependencyTag(child) == JniFuzzLibTag &&
-							c.SanitizePropDefined() &&
-							!c.SanitizeNever() &&
-							!c.IsSanitizerExplicitlyDisabled(t) {
-							c.SetSanitizeDep(true)
-						}
-					})
-				}
+			if jniSanitizeable.IsSanitizerEnabledForJni(mctx, t.name()) {
+				mctx.VisitDirectDeps(func(child android.Module) {
+					if c, ok := child.(PlatformSanitizeable); ok &&
+						mctx.OtherModuleDependencyTag(child) == JniFuzzLibTag &&
+						c.SanitizePropDefined() &&
+						!c.SanitizeNever() &&
+						!c.IsSanitizerExplicitlyDisabled(t) {
+						c.SetSanitizeDep(true)
+					}
+				})
 			}
-
+		} else if sanitizeable, ok := mctx.Module().(Sanitizeable); ok {
 			// If an APEX module includes a lib which is enabled for a sanitizer T, then
 			// the APEX module is also enabled for the same sanitizer type.
 			mctx.VisitDirectDeps(func(child android.Module) {
@@ -1529,12 +1527,10 @@
 	if !Bool(sanitize.Properties.Sanitize.Address) &&
 		!Bool(sanitize.Properties.Sanitize.Hwaddress) &&
 		!Bool(sanitize.Properties.Sanitize.Fuzzer) &&
-
 		(Bool(sanitize.Properties.Sanitize.Integer_overflow) ||
 			len(sanitize.Properties.Sanitize.Misc_undefined) > 0 ||
 			Bool(sanitize.Properties.Sanitize.Undefined) ||
 			Bool(sanitize.Properties.Sanitize.All_undefined)) &&
-
 		!(Bool(sanitize.Properties.Sanitize.Diag.Integer_overflow) ||
 			Bool(sanitize.Properties.Sanitize.Diag.Cfi) ||
 			Bool(sanitize.Properties.Sanitize.Diag.Undefined) ||
diff --git a/java/androidmk.go b/java/androidmk.go
index 4a75d30..330e594 100644
--- a/java/androidmk.go
+++ b/java/androidmk.go
@@ -324,7 +324,7 @@
 }
 
 func (app *AndroidApp) AndroidMkEntries() []android.AndroidMkEntries {
-	if app.hideApexVariantFromMake || app.appProperties.HideFromMake {
+	if app.hideApexVariantFromMake || app.IsHideFromMake() {
 		return []android.AndroidMkEntries{android.AndroidMkEntries{
 			Disabled: true,
 		}}
diff --git a/java/app.go b/java/app.go
index 3c97a4f..2bb116a 100755
--- a/java/app.go
+++ b/java/app.go
@@ -99,7 +99,6 @@
 
 	// cc.Coverage related properties
 	PreventInstall    bool `blueprint:"mutated"`
-	HideFromMake      bool `blueprint:"mutated"`
 	IsCoverageVariant bool `blueprint:"mutated"`
 
 	// Whether this app is considered mainline updatable or not. When set to true, this will enforce
@@ -880,10 +879,6 @@
 	a.appProperties.PreventInstall = true
 }
 
-func (a *AndroidApp) HideFromMake() {
-	a.appProperties.HideFromMake = true
-}
-
 func (a *AndroidApp) MarkAsCoverageVariant(coverage bool) {
 	a.appProperties.IsCoverageVariant = coverage
 }
diff --git a/java/app_test.go b/java/app_test.go
index b91e7e0..c4ac4df 100644
--- a/java/app_test.go
+++ b/java/app_test.go
@@ -2042,6 +2042,41 @@
 	}
 }
 
+func TestOverrideAndroidAppWithPrebuilt(t *testing.T) {
+	result := PrepareForTestWithJavaDefaultModules.RunTestWithBp(
+		t, `
+		android_app {
+			name: "foo",
+			srcs: ["a.java"],
+			sdk_version: "current",
+		}
+
+		override_android_app {
+			name: "bar",
+			base: "foo",
+		}
+
+		android_app_import {
+			name: "bar",
+			prefer: true,
+			apk: "bar.apk",
+			presigned: true,
+		}
+		`)
+
+	// An app that has an override that also has a prebuilt should not be hidden.
+	foo := result.ModuleForTests("foo", "android_common")
+	if foo.Module().IsHideFromMake() {
+		t.Errorf("expected foo to have HideFromMake false")
+	}
+
+	// An override that also has a prebuilt should be hidden.
+	barOverride := result.ModuleForTests("foo", "android_common_bar")
+	if !barOverride.Module().IsHideFromMake() {
+		t.Errorf("expected bar override variant of foo to have HideFromMake true")
+	}
+}
+
 func TestOverrideAndroidAppStem(t *testing.T) {
 	ctx, _ := testJava(t, `
 		android_app {
diff --git a/java/fuzz.go b/java/fuzz.go
index 584c80b..cf2c981 100644
--- a/java/fuzz.go
+++ b/java/fuzz.go
@@ -50,9 +50,10 @@
 	jniFilePaths       android.Paths
 }
 
-// IsSanitizerEnabled implemented to make JavaFuzzLibrary implement
-// cc.Sanitizeable
-func (j *JavaFuzzLibrary) IsSanitizerEnabled(ctx android.BaseModuleContext, sanitizerName string) bool {
+// IsSanitizerEnabledForJni implemented to make JavaFuzzLibrary implement
+// cc.JniSanitizeable. It returns a bool for whether a cc dependency should be
+// sanitized for the given sanitizer or not.
+func (j *JavaFuzzLibrary) IsSanitizerEnabledForJni(ctx android.BaseModuleContext, sanitizerName string) bool {
 	for _, s := range j.jniProperties.Sanitizers {
 		if sanitizerName == s {
 			return true
@@ -61,26 +62,6 @@
 	return false
 }
 
-// IsSanitizerEnabledForJni implemented to make JavaFuzzLibrary implement
-// cc.JniSanitizeable. It returns a bool for whether a cc dependency should be
-// sanitized for the given sanitizer or not.
-func (j *JavaFuzzLibrary) IsSanitizerEnabledForJni(ctx android.BaseModuleContext, sanitizerName string) bool {
-	return j.IsSanitizerEnabled(ctx, sanitizerName)
-}
-
-// EnableSanitizer implemented to make JavaFuzzLibrary implement
-// cc.Sanitizeable
-func (j *JavaFuzzLibrary) EnableSanitizer(sanitizerName string) {
-}
-
-// AddSanitizerDependencies implemented to make JavaFuzzLibrary implement
-// cc.Sanitizeable
-func (j *JavaFuzzLibrary) AddSanitizerDependencies(mctx android.BottomUpMutatorContext, sanitizerName string) {
-}
-
-// To verify that JavaFuzzLibrary implements cc.Sanitizeable
-var _ cc.Sanitizeable = (*JavaFuzzLibrary)(nil)
-
 func (j *JavaFuzzLibrary) DepsMutator(mctx android.BottomUpMutatorContext) {
 	if len(j.jniProperties.Jni_libs) > 0 {
 		if j.fuzzPackagedModule.FuzzProperties.Fuzz_config == nil {
diff --git a/tests/bp2build_bazel_test.sh b/tests/bp2build_bazel_test.sh
index 74e49aa..78ddced 100755
--- a/tests/bp2build_bazel_test.sh
+++ b/tests/bp2build_bazel_test.sh
@@ -169,3 +169,29 @@
 }
 
 test_cc_correctness
+
+# Regression test for the following failure during symlink forest creation:
+#
+#   Cannot stat '/tmp/st.rr054/foo/bar/unresolved_symlink': stat /tmp/st.rr054/foo/bar/unresolved_symlink: no such file or directory
+#
+function test_bp2build_null_build_with_unresolved_symlink_in_source() {
+  setup
+
+  mkdir -p foo/bar
+  ln -s /tmp/non-existent foo/bar/unresolved_symlink
+  cat > foo/bar/Android.bp <<'EOF'
+filegroup {
+    name: "fg",
+    srcs: ["unresolved_symlink/non-existent-file.txt"],
+  }
+EOF
+
+  run_soong bp2build
+
+  dest=$(readlink -f out/soong/workspace/foo/bar/unresolved_symlink)
+  if [[ "$dest" != "/tmp/non-existent" ]]; then
+    fail "expected to plant an unresolved symlink out/soong/workspace/foo/bar/unresolved_symlink that resolves to /tmp/non-existent"
+  fi
+}
+
+test_bp2build_null_build_with_unresolved_symlink_in_source
diff --git a/tests/lib.sh b/tests/lib.sh
index 7fd970a..abe84d3 100644
--- a/tests/lib.sh
+++ b/tests/lib.sh
@@ -127,6 +127,10 @@
 }
 
 run_bazel() {
+  # Remove the ninja_build output marker file to communicate to buildbot that this is not a regular Ninja build, and its
+  # output should not be parsed as such.
+  rm -rf out/ninja_build
+
   tools/bazel "$@"
 }