Fix JavacTypeBinding.getErasure() for arrays

Author: mickaelistria

org.eclipse.jdt.core.javac/src/org/eclipse/jdt/internal/javac/dom/JavacErrorTypeBinding.java

@@ -10,12 +10,11 @@
  *******************************************************************************/
 package org.eclipse.jdt.internal.javac.dom;
 
-import org.eclipse.jdt.core.dom.ITypeBinding;
 import org.eclipse.jdt.core.dom.JavacBindingResolver;
 
+import com.sun.tools.javac.code.Type;
 import com.sun.tools.javac.code.Symbol.ClassSymbol;
 import com.sun.tools.javac.code.Symbol.TypeSymbol;
-import com.sun.tools.javac.code.Type;
 
 /**
  * Represents a binding for a type that javac struggles to recover,
@@ -73,7 +72,7 @@ private String getKeyImpl() {
 	}
 
 	@Override
-	public ITypeBinding getErasure() {
+	public JavacTypeBinding getErasure() {
 		return this.resolver.bindings.getTypeBinding(this.types.erasure(this.originatingSymbol.type));
 	}
 

org.eclipse.jdt.core.javac/src/org/eclipse/jdt/internal/javac/dom/JavacTypeBinding.java

@@ -744,7 +744,7 @@ public int getRank() {
 	}
 
 	@Override
-	public ITypeBinding getComponentType() {
+	public JavacTypeBinding getComponentType() {
 		if (this.type instanceof ArrayType arrayType) {
 			return this.resolver.bindings.getTypeBinding(arrayType.elemtype);
 		}
@@ -933,7 +933,12 @@ public ITypeBinding getElementType() {
 	}
 
 	@Override
-	public ITypeBinding getErasure() {
+	public JavacTypeBinding getErasure() {
+		if (isArray()) {
+			JavacTypeBinding component = getComponentType().getErasure();
+			ArrayType arrayType = this.types.makeArrayType(component.type);
+			return this.resolver.bindings.getTypeBinding(arrayType, false);
+		}
 		if (isParameterizedType()) {
 			// generic binding
 			return this.resolver.bindings.getTypeBinding(this.type, true);