Correctly serialize class loader context for "any" SDK version to JSON.

Previously "any" was serialized as its numeric value, 10000. But other
code in makefiles and scripts expects string "any", and dexpreopt.config
files generated by Make (for Android.mk modules) have "any" not 10000.

Bug: 214255490
Test: lunch aosp_cf_x86_64_phone-userdebug && m && launch_cvd \
    && adb wait-for-device && adb root \
    && adb logcat | grep -E 'ClassLoaderContext [a-z ]+ mismatch'
    # empty output, no errors at boot
Change-Id: Id5e80eb8a90d9786b5cb999c172aaecb44952f76

2 files changed, 35 insertions, 0 deletions

diff --git a/dexpreopt/class_loader_context.go b/dexpreopt/class_loader_context.go
index 36513b64b..d0a6a39df 100644
--- a/dexpreopt/class_loader_context.go
+++ b/dexpreopt/class_loader_context.go
@@ -678,6 +678,9 @@ func toJsonClassLoaderContext(clcMap ClassLoaderContextMap) jsonClassLoaderConte
 	jClcMap := make(jsonClassLoaderContextMap)
 	for sdkVer, clcs := range clcMap {
 		sdkVerStr := fmt.Sprintf("%d", sdkVer)
+		if sdkVer == AnySdkVersion {
+			sdkVerStr = "any"
+		}
 		jClcMap[sdkVerStr] = toJsonClassLoaderContextRec(clcs)
 	}
 	return jClcMap
diff --git a/dexpreopt/class_loader_context_test.go b/dexpreopt/class_loader_context_test.go
index 5d3a9d943..614681f50 100644
--- a/dexpreopt/class_loader_context_test.go
+++ b/dexpreopt/class_loader_context_test.go
@@ -389,6 +389,38 @@ func TestCLCMExcludeLibs(t *testing.T) {
 	})
 }
 
+// Test that CLC is correctly serialized to JSON.
+func TestCLCtoJSON(t *testing.T) {
+	ctx := testContext()
+	optional := false
+	implicit := true
+	m := make(ClassLoaderContextMap)
+	m.AddContext(ctx, 28, "a", optional, implicit, buildPath(ctx, "a"), installPath(ctx, "a"), nil)
+	m.AddContext(ctx, AnySdkVersion, "b", optional, implicit, buildPath(ctx, "b"), installPath(ctx, "b"), nil)
+	android.AssertStringEquals(t, "output CLCM ", `{
+  "28": [
+    {
+      "Name": "a",
+      "Optional": false,
+      "Implicit": true,
+      "Host": "out/soong/a.jar",
+      "Device": "/system/a.jar",
+      "Subcontexts": []
+    }
+  ],
+  "any": [
+    {
+      "Name": "b",
+      "Optional": false,
+      "Implicit": true,
+      "Host": "out/soong/b.jar",
+      "Device": "/system/b.jar",
+      "Subcontexts": []
+    }
+  ]
+}`, m.Dump())
+}
+
 func checkError(t *testing.T, have error, want string) {
 	if have == nil {
 		t.Errorf("\nwant error: '%s'\nhave: none", want)