From 83c764862fbcc3e56bececa6893638667b615e58 Mon Sep 17 00:00:00 2001
From: Vojin Jovanovic <vojin.jovanovic@oracle.com>
Date: Mon, 29 Apr 2024 19:42:53 +0200
Subject: [PATCH] Use JVMCI for @Delete classes

---
 .../oracle/svm/hosted/NativeImageOptions.java |  2 +-
 .../AnnotationSubstitutionProcessor.java      | 30 +++++++++++++------
 2 files changed, 22 insertions(+), 10 deletions(-)

diff --git a/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/NativeImageOptions.java b/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/NativeImageOptions.java
index 8453ecb2db1d4..becf945b942d2 100644
--- a/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/NativeImageOptions.java
+++ b/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/NativeImageOptions.java
@@ -143,7 +143,7 @@ protected void onValueUpdate(EconomicMap<OptionKey<?>, Object> values, Boolean o
     @Option(help = "Allow MethodTypeFlow to see @Fold methods")//
     public static final HostedOptionKey<Boolean> AllowFoldMethods = new HostedOptionKey<>(false);
 
-    @APIOption(name = "report-unsupported-elements-at-runtime", deprecated = "The flag is not needed anymore as usage of unsupported elements is now reported at run time by default.")//
+    @APIOption(name = "report-unsupported-elements-at-runtime", deprecated = "The option is deprecated and will be removed in the future. The use of unsupported elements is always reported at run time.")//
     @Option(help = "Report usage of unsupported methods and fields at run time when they are accessed the first time, instead of as an error during image building", type = Debug)//
     public static final HostedOptionKey<Boolean> ReportUnsupportedElementsAtRuntime = new HostedOptionKey<>(true);
 
diff --git a/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/substitute/AnnotationSubstitutionProcessor.java b/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/substitute/AnnotationSubstitutionProcessor.java
index 29f9d731b83f6..507ca45ea4822 100644
--- a/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/substitute/AnnotationSubstitutionProcessor.java
+++ b/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/substitute/AnnotationSubstitutionProcessor.java
@@ -585,23 +585,35 @@ private static boolean hasDefaultValue(Field annotatedField) {
 
     private void handleDeletedClass(Class<?> originalClass, Delete deleteAnnotation) {
         if (NativeImageOptions.ReportUnsupportedElementsAtRuntime.getValue()) {
+            ResolvedJavaType type = metaAccess.lookupJavaType(originalClass);
+
+            try {
+                type.link();
+            } catch (LinkageError ignored) {
+                /*
+                 * Ignore any linking errors. A type that cannot be linked doesn't need elements
+                 * replaced: it will simply fail at runtime with the same linkage error before
+                 * reaching those elements.
+                 */
+                return;
+            }
+
             /*
              * We register all methods and fields as deleted. That still allows usage of the type in
              * type checks.
              */
-            for (Executable m : originalClass.getDeclaredMethods()) {
-                ResolvedJavaMethod method = metaAccess.lookupJavaMethod(m);
+            for (ResolvedJavaMethod method : type.getDeclaredMethods()) {
                 registerAsDeleted(null, method, deleteAnnotation);
             }
-            for (Executable m : originalClass.getDeclaredConstructors()) {
-                ResolvedJavaMethod method = metaAccess.lookupJavaMethod(m);
-                registerAsDeleted(null, method, deleteAnnotation);
+            for (ResolvedJavaMethod constructor : type.getDeclaredConstructors()) {
+                registerAsDeleted(null, constructor, deleteAnnotation);
             }
-            for (Field f : originalClass.getDeclaredFields()) {
-                ResolvedJavaField field = metaAccess.lookupJavaField(f);
-                registerAsDeleted(null, field, deleteAnnotation);
+            for (ResolvedJavaField f : type.getInstanceFields(false)) {
+                registerAsDeleted(null, f, deleteAnnotation);
+            }
+            for (ResolvedJavaField f : type.getStaticFields()) {
+                registerAsDeleted(null, f, deleteAnnotation);
             }
-
         } else {
             deleteAnnotations.put(metaAccess.lookupJavaType(originalClass), deleteAnnotation);
         }