From: Mark Wooding <mdw@distorted.org.uk>
Date: Sat, 29 Mar 2025 16:00:25 +0000 (+0000)
Subject: @@@ man tweak
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/xyla/commitdiff_plain/4c0cc7c28a4292cc2b5066909f888caa656faa1f?ds=sidebyside

@@@ man tweak
---

diff --git a/xyla.3 b/xyla.3
index ace68e5..47b46cc 100644
--- a/xyla.3
+++ b/xyla.3
@@ -2451,6 +2451,11 @@ while the checking proceeds;
 the
 .I arg
 will be passed to these operations as the `user state' pointer.
+Note that checking will
+.I mutate
+the tree!
+It is not safe to check a tree
+while it is being accessed by another thread.
 See the section
 .B "CHECKING FRAMEWORK"
 below for full details.
@@ -2464,7 +2469,6 @@ or some other nonzero value if checking was aborted.
 .\"--------------------------------------------------------------------------
 .SH "TREE IDIOSYNCRASIES"
 .
-.
 .SS "AVL trees"
 An
 .I Adelson-Velsky\(en\&Landis