Minor tweaks post #948 wrt internal exceptions; update release notes

release-notes/VERSION-2.x

@@ -37,6 +37,8 @@ JSON library.
   allow for deferred decoding in some cases
 #921: Add `JsonFactory.Feature` to disable charset detection
  (contributed by @yawkat) 
+#948: Use `StreamConstraintsException` in name canonicalizers
+ (contributed by @pjfanning)
 - Build uses package type "jar" but still produces valid OSGi bundle
  (changed needed to keep class timestamps with Reproducible Build)
 

src/main/java/com/fasterxml/jackson/core/sym/ByteQuadsCanonicalizer.java

@@ -990,16 +990,16 @@ public String addName(String name, int[] q, int qlen) throws StreamConstraintsEx
         return name;
     }
 
-    private void _verifySharing() throws StreamConstraintsException
+    private void _verifySharing()
     {
         if (_hashShared) {
             // 12-Mar-2021, tatu: prevent modifying of "placeholder" and
             //   parent tables
             if (_parent == null) {
                 if (_count == 0) { // root
-                    throw new StreamConstraintsException("Cannot add names to Root symbol table");
+                    throw new IllegalStateException("Internal error: Cannot add names to Root symbol table");
                 }
-                throw new StreamConstraintsException("Cannot add names to Placeholder symbol table");
+                throw new IllegalStateException("Internal error: Cannot add names to Placeholder symbol table");
             }
 
             _hashArea = Arrays.copyOf(_hashArea, _hashArea.length);
@@ -1314,7 +1314,7 @@ private void rehash() throws StreamConstraintsException
         // Sanity checks: since corruption difficult to detect, assert explicitly
         // with production code
         if (copyCount != oldCount) {
-            throw new StreamConstraintsException("Failed rehash(): old count="+oldCount+", copyCount="+copyCount);
+            throw new IllegalStateException("Internal error: Failed rehash(), old count="+oldCount+", copyCount="+copyCount);
         }
     }
 

src/main/java/com/fasterxml/jackson/core/sym/CharsToNameCanonicalizer.java

@@ -725,10 +725,9 @@ protected void _reportTooManyCollisions(int maxLen) throws StreamConstraintsExce
      * Diagnostics method that will verify that internal data structures are consistent;
      * not meant as user-facing method but only for test suites and possible troubleshooting.
      *
-     * @throws StreamConstraintsException if the size does not match what is expected
      * @since 2.10
      */
-    protected void verifyInternalConsistency() throws IOException {
+    protected void verifyInternalConsistency() {
         int count = 0;
         final int size = _symbols.length;
 
@@ -746,7 +745,7 @@ protected void verifyInternalConsistency() throws IOException {
             }
         }
         if (count != _size) {
-            throw new StreamConstraintsException(
+            throw new IllegalStateException(
                     String.format("Internal error: expected internal size %d vs calculated count %d",
                             _size, count));
         }

src/test/java/com/fasterxml/jackson/core/sym/TestByteBasedSymbols.java

@@ -122,7 +122,7 @@ public void testIssue207() throws Exception
     }
 
     // [core#548]
-    public void testQuadsIssue548() throws IOException
+    public void testQuadsIssue548() throws Exception
     {
         Random r = new Random(42);
         ByteQuadsCanonicalizer root = ByteQuadsCanonicalizer.createRoot();
@@ -170,7 +170,7 @@ public void testQuadsIssue548() throws IOException
     /**********************************************************
      */
 
-    protected JsonParser createParser(JsonFactory jf, String input) throws IOException
+    protected JsonParser createParser(JsonFactory jf, String input) throws Exception
     {
         byte[] data = input.getBytes(StandardCharsets.UTF_8);
         InputStream is = new ByteArrayInputStream(data);