8307732: build-test-lib is broken

8274345: make build-test-lib is broken
8303922: build-test-lib target is broken

Reviewed-by: shade
Backport-of: 0da48f19cbebe0730d689cb966b886f6f73fb3f1

make/test/BuildTestLib.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2015, 2020, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2015, 2023, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -36,9 +36,11 @@ TEST_LIB_SUPPORT := $(SUPPORT_OUTPUTDIR)/test/lib
 
 $(eval $(call SetupJavaCompilation, BUILD_WB_JAR, \
     TARGET_RELEASE := $(TARGET_RELEASE_NEWJDK_UPGRADED), \
-    SRC := $(TEST_LIB_SOURCE_DIR)/sun, \
+    SRC := $(TEST_LIB_SOURCE_DIR)/jdk/test/whitebox/, \
     BIN := $(TEST_LIB_SUPPORT)/wb_classes, \
     JAR := $(TEST_LIB_SUPPORT)/wb.jar, \
+    DISABLED_WARNINGS := deprecation removal preview, \
+    JAVAC_FLAGS := --enable-preview, \
 ))
 
 TARGETS += $(BUILD_WB_JAR)
@@ -50,7 +52,14 @@ $(eval $(call SetupJavaCompilation, BUILD_TEST_LIB_JAR, \
     BIN := $(TEST_LIB_SUPPORT)/test-lib_classes, \
     HEADERS := $(TEST_LIB_SUPPORT)/test-lib_headers, \
     JAR := $(TEST_LIB_SUPPORT)/test-lib.jar, \
-    DISABLED_WARNINGS := try deprecation rawtypes unchecked serial cast, \
+    DISABLED_WARNINGS := try deprecation rawtypes unchecked serial cast removal preview, \
+    JAVAC_FLAGS := --add-exports java.base/sun.security.util=ALL-UNNAMED \
+        --add-exports java.base/jdk.internal.classfile=ALL-UNNAMED \
+        --add-exports java.base/jdk.internal.classfile.attribute=ALL-UNNAMED \
+        --add-exports java.base/jdk.internal.classfile.constantpool=ALL-UNNAMED \
+        --add-exports java.base/jdk.internal.classfile.java.lang.constant=ALL-UNNAMED \
+        --add-exports java.base/jdk.internal.module=ALL-UNNAMED \
+        --enable-preview, \
 ))
 
 TARGETS += $(BUILD_TEST_LIB_JAR)

test/lib/jdk/test/lib/hexdump/ASN1Formatter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -303,7 +303,7 @@ private int annotate(DataInputStream in, Appendable out, int available, String p
                 case TAG_BitString:
                     out.append(String.format("%s [%d]", tagName(tag), len));
                     do {
-                        var skipped = in.skip(len);
+                        var skipped = (int) in.skip(len);
                         len -= skipped;
                         available -= skipped;
                     } while (len > 0);

test/lib/jdk/test/lib/net/HttpHeaderParser.java

@@ -34,7 +34,7 @@
 
 import static java.util.Objects.requireNonNull;
 
-public class HttpHeaderParser {
+public final class HttpHeaderParser {
     private static final char CR = '\r';
     private static final char LF = '\n';
     private static final char HT = '\t';