Merge pull request #21317 from aschackmull/java/deprecate-unreachableblocks

Java: Deprecate UnreachableBlocks.

Author: aschackmull

java/ql/lib/change-notes/2026-02-12-deprecate-unreachableblocks.md

@@ -0,0 +1,4 @@
+---
+category: deprecated
+---
+* The `UnreachableBlocks.qll` library has been deprecated.

java/ql/lib/semmle/code/java/controlflow/UnreachableBlocks.qll

@@ -1,8 +1,10 @@
 /**
+ * DEPRECATED: This module is no longer maintained, and will be removed in a future release.
+ *
  * Provides classes and predicates for identifying unreachable blocks under a "closed-world" assumption.
  */
 overlay[local?]
-module;
+deprecated module;
 
 import java
 import semmle.code.java.controlflow.Guards

java/ql/lib/semmle/code/java/controlflow/unreachableblocks/ExcludeDebuggingProfilingLogging.qll

@@ -1,5 +1,8 @@
+/**
+ * DEPRECATED: This module is no longer maintained, and will be removed in a future release.
+ */
 overlay[local?]
-module;
+deprecated module;
 
 import java
 import semmle.code.java.controlflow.UnreachableBlocks