Missing names must have length 0, not length 7 representing <error>

Signed-off-by: Rob Stryker <stryker@redhat.com>

org.eclipse.jdt.core.javac/src/org/eclipse/jdt/core/dom/JavacConverter.java

@@ -49,9 +49,8 @@
 import com.sun.tools.javac.parser.ParserFactory;
 import com.sun.tools.javac.parser.Tokens.Comment;
 import com.sun.tools.javac.parser.Tokens.Comment.CommentStyle;
-import com.sun.tools.javac.tree.JCTree;
-import com.sun.tools.javac.tree.TreeInfo;
 import com.sun.tools.javac.tree.DCTree.DCDocComment;
+import com.sun.tools.javac.tree.JCTree;
 import com.sun.tools.javac.tree.JCTree.JCAnnotatedType;
 import com.sun.tools.javac.tree.JCTree.JCAnnotation;
 import com.sun.tools.javac.tree.JCTree.JCAnyPattern;
@@ -125,6 +124,7 @@
 import com.sun.tools.javac.tree.JCTree.JCWildcard;
 import com.sun.tools.javac.tree.JCTree.JCYield;
 import com.sun.tools.javac.tree.JCTree.Tag;
+import com.sun.tools.javac.tree.TreeInfo;
 import com.sun.tools.javac.util.Context;
 import com.sun.tools.javac.util.JCDiagnostic;
 import com.sun.tools.javac.util.Log;
@@ -2877,7 +2877,8 @@ private IfStatement convertIfStatement(JCIf javac) {
 	Type convertToType(JCTree javac) {
 		if (javac instanceof JCIdent ident) {
 			Name name = convertName(ident.name);
-			name.setSourceRange(ident.getStartPosition(), ident.name.length());
+			int len = FAKE_IDENTIFIER.equals(name.toString()) ? 0 : ident.name.length();
+			name.setSourceRange(ident.getStartPosition(), len);
 			SimpleType res = this.ast.newSimpleType(name);
 			commonSettings(res, ident);
 			commonSettings(name, ident);