From ff8828d6ef3b980a7ded086d40c9bf2c73bf466c Mon Sep 17 00:00:00 2001
From: Celrenheit <celrenheit+github@gmail.com>
Date: Tue, 21 Feb 2023 10:21:00 +0100
Subject: [PATCH] catch potential deadlock when the context is done but waiting
 to send on a channel in the default case

---
 select-default-deadlock.yml | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 select-default-deadlock.yml

diff --git a/select-default-deadlock.yml b/select-default-deadlock.yml
new file mode 100644
index 0000000..9308386
--- /dev/null
+++ b/select-default-deadlock.yml
@@ -0,0 +1,14 @@
+rules:
+- id: ctx-done-and-default-deadlock
+  patterns:
+    - pattern-either: 
+      - pattern: |
+          select {
+          case <-ctx.Done():
+              $BODY
+          default:
+              ... <- ...
+          }
+  message: "ctx.Done() and send to channel in default can cause a potential deadlock"
+  languages: [go]
+  severity: ERROR
\ No newline at end of file