Exclude some fields in proguard rule which would be affected by reflection op

siuank · wenshao · commit dc636086fe3d · 2025-12-26T09:21:31.000+08:00
diff --git a/core/src/main/resources/META-INF/proguard/fastjson2.pro b/core/src/main/resources/META-INF/proguard/fastjson2.pro
@@ -24,3 +24,18 @@
 # Keep any (anonymous) classes extending TypeReference
 -keep, allowobfuscation class com.alibaba.fastjson2.TypeReference
 -keep, allowobfuscation class * extends com.alibaba.fastjson2.TypeReference
+
+# Don't rename/shrink the following class fields, as they are accessed by internal reflection tool *AtomicReferenceFieldUpdater*
+# They should always be described by "volatile" modifier, if not, please report an issue
+-keepclassmembers class com.alibaba.fastjson2.JSONFactory$CacheItem {
+  volatile <fields>;
+}
+-keepclassmembers class com.alibaba.fastjson2.util.TypeUtils$Cache {
+  volatile <fields>;
+}
+-keepclassmembers class com.alibaba.fastjson2.writer.FieldWriter {
+  volatile com.alibaba.fastjson2.writer.ObjectWriter initObjectWriter;
+}
+-keepclassmembers class com.alibaba.fastjson2.writer.FieldWriterObject {
+  volatile java.lang.Class initValueClass;
+}
