src/jdk.compiler/share/classes/com/sun/tools/javac/comp/AttrContext.java

*** 128,10 ***
--- 128,12 ---
       *  but this may not be true during the window a method is looked up in enclosing
       *  contexts (JDK-8145466)
       */
      JCTree preferredTreeForDiagnostics;
  
+     boolean instanceInitializerBlock = false;
+ 
      /** Duplicate this context, replacing scope field and copying all others.
       */
      AttrContext dup(WriteableScope scope) {
          AttrContext info = new AttrContext();
          info.scope = scope;

*** 151,10 ***
--- 153,11 ---
          info.isAnonymousDiamond = isAnonymousDiamond;
          info.isNewClass = isNewClass;
          info.preferredTreeForDiagnostics = preferredTreeForDiagnostics;
          info.visitingServiceImplementation = visitingServiceImplementation;
          info.allowProtectedAccess = allowProtectedAccess;
+         info.instanceInitializerBlock = instanceInitializerBlock;
          info.isPermitsClause = isPermitsClause;
          return info;
      }
  
      /** Duplicate this context, copying all fields.