Add CHANGES and release note for [GL #3840]

diff --git a/CHANGES b/CHANGES
index c01dc9e32690a6fc87b5009f667d161bbb92a0e8..1cc24da1a8095be7a1fe3a9fada4c42f9b7bfed1 100644 (file)
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,9 @@
+6094.  [bug]           Building against (or running with) libuv versions
+                       1.35.0 and 1.36.0 is now a fatal error.  The rules for
+                       mixing and matching compile-time and run-time libuv
+                       versions have been tightened for libuv versions between
+                       1.35.0 and 1.40.0. [GL #3840]
+
 6093.  [performance]   Reduce the size of each rdataset header object
                        by 16 bytes. [GL !7505]
 

diff --git a/doc/notes/notes-current.rst b/doc/notes/notes-current.rst
index 9ecaa24c7c8e6ac02a3b19f37b41e3a56d5b4070..033c079aa648eabd658f4cae1d91fe7bc2bde7f8 100644 (file)
--- a/doc/notes/notes-current.rst
+++ b/doc/notes/notes-current.rst
@@ -32,7 +32,26 @@ Removed Features
 Feature Changes
 ~~~~~~~~~~~~~~~
 
-- None.
+- libuv support for receiving multiple UDP messages in a single system
+  call (``recvmmsg()``) has been tweaked several times between libuv
+  versions 1.35.0 and 1.40.0; the recommended libuv version is 1.40.0 or
+  higher. New rules are now in effect for running with a different
+  version of libuv than the one used at compilation time. These rules
+  may trigger a fatal error at startup:
+
+  - Building against or running with libuv versions 1.35.0 and 1.36.0 is
+    now a fatal error.
+
+  - Running with libuv version higher than 1.34.2 is now a fatal error
+    when :iscman:`named` is built against libuv version 1.34.2 or lower.
+
+  - Running with libuv version higher than 1.39.0 is now a fatal error
+    when :iscman:`named` is built against libuv version 1.37.0, 1.38.0,
+    1.38.1, or 1.39.0.
+
+  This prevents the use of libuv versions that may trigger an assertion
+  failure when receiving multiple UDP messages in a single system call.
+  :gl:`#3840`
 
 Bug Fixes
 ~~~~~~~~~