diff --git a/Gitea-tips-and-tricks-for-TAs.md b/Gitea-tips-and-tricks-for-TAs.md
index ee41e2c..9deab47 100644
--- a/Gitea-tips-and-tricks-for-TAs.md
+++ b/Gitea-tips-and-tricks-for-TAs.md
@@ -34,3 +34,7 @@ jobs:
         run: |
           sudo -E -u tt joj3 -conf-root /home/tt/.config/joj
 ```
+
+## msan with `iostream`
+
+https://code.google.com/p/memory-sanitizer/wiki/LibcxxHowTo
\ No newline at end of file