8204330: Javadoc IllegalArgumentException: HTML special chars in constant value

Reviewed-by: ksrini

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/HtmlDocletWriter.java

@@ -176,8 +176,6 @@ public class HtmlDocletWriter {
 
     HtmlTree fixedNavDiv = new HtmlTree(HtmlTag.DIV);
 
-    final static Pattern IMPROPER_HTML_CHARS = Pattern.compile(".*[&<>].*");
-
     /**
      * The window title of this file.
      */
@@ -910,15 +908,7 @@ public class HtmlDocletWriter {
      */
     public Content getDocLink(LinkInfoImpl.Kind context, TypeElement typeElement, Element element,
             CharSequence label, boolean strong, boolean isProperty) {
-        return getDocLink(context, typeElement, element, new StringContent(check(label)), strong, isProperty);
+        return getDocLink(context, typeElement, element, new StringContent(label), strong, isProperty);
-    }
-
-    CharSequence check(CharSequence s) {
-        Matcher m = IMPROPER_HTML_CHARS.matcher(s);
-        if (m.matches()) {
-            throw new IllegalArgumentException(s.toString());
-        }
-        return s;
     }
 
     public Content getDocLink(LinkInfoImpl.Kind context, TypeElement typeElement, Element element,

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/TagletWriterImpl.java

@@ -406,9 +406,9 @@ public class TagletWriterImpl extends TagletWriter {
      * {@inheritDoc}
      */
     public Content valueTagOutput(VariableElement field, String constantVal, boolean includeLink) {
-        return includeLink ?
+        return includeLink
-            htmlWriter.getDocLink(LinkInfoImpl.Kind.VALUE_TAG, field,
+                ? htmlWriter.getDocLink(LinkInfoImpl.Kind.VALUE_TAG, field, constantVal, false)
-                constantVal, false) : new RawHtml(constantVal);
+                : new StringContent(constantVal);
     }
 
     /**

test/langtools/jdk/javadoc/doclet/testValueTag/TestValueTag.java

@@ -23,7 +23,7 @@
 
 /*
  * @test
- * @bug      4764045 8004825 8026567 8191030
+ * @bug      4764045 8004825 8026567 8191030 8204330
  * @summary  This test ensures that the value tag works in all
  *           use cases, the tests are explained below.
  * @author   jamieh
@@ -33,6 +33,12 @@
  * @run main TestValueTag
  */
 
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.List;
+
 public class TestValueTag extends JavadocTester {
 
     public static void main(String... args) throws Exception {
@@ -110,7 +116,7 @@ public class TestValueTag extends JavadocTester {
         checkForException();
     }
 
-    @Test()
+    @Test
     void test2() {
         javadoc("-Xdoclint:none",
                 "-d", "out2",
@@ -133,7 +139,7 @@ public class TestValueTag extends JavadocTester {
         checkForException();
     }
 
-    @Test()
+    @Test
     void test3() {
         javadoc("-d", "out3",
                 "-sourcepath", testSrc,
@@ -146,10 +152,37 @@ public class TestValueTag extends JavadocTester {
                 "The value2 is <a href=\"#CONSTANT\">\"constant\"</a>.",
                 "The value3 is <a href=\"../pkg2/Class3.html#TEST_12_PASSES\">"
                 + "\"Test 12 passes\"</a>.");
+        checkForException();
+    }
+
+    @Test
+    void test4() throws IOException {
+        Path base = Paths.get("test4");
+        Path src = base.resolve("src");
+        Files.createDirectories(src.resolve("p"));
+        Files.write(src.resolve("p").resolve("C.java"), List.of(
+                "package p;",
+                "/** This class defines specialChars: {@value C#specialChars}. */",
+                "public class C {",
+                "    /** The value is {@value}. */",
+                "    public static final String specialChars = \"abc < def & ghi > jkl\";",
+                "}"));
+
+        javadoc("-d", base.resolve("out").toString(),
+                "-sourcepath", src.toString(),
+                "p");
+        checkExit(Exit.OK);
+        checkOutput("p/C.html", false,
+                "The value is \"abc < def & ghi > jkl\".");
+        checkOutput("p/C.html", true,
+                "The value is \"abc &lt; def &amp; ghi &gt; jkl\".");
+
+        checkForException();
     }
 
 
     void checkForException() {
         checkOutput(Output.STDERR, false, "DocletAbortException");
+        checkOutput(Output.STDERR, false, "IllegalArgumentException");
     }
 }