From 4532517ca5b29172e6d624f5fc62bc6a9c6f3a4a Mon Sep 17 00:00:00 2001
From: Arnaud <arnaud@status.im>
Date: Mon, 1 Jun 2026 15:20:23 +0400
Subject: [PATCH] Add safety guard when destroying the mapping

---
 libplum/plum.nim | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libplum/plum.nim b/libplum/plum.nim
index c70fd33..9201756 100644
--- a/libplum/plum.nim
+++ b/libplum/plum.nim
@@ -266,6 +266,10 @@ proc createMapping*(
 
 proc destroyMapping*(id: cint) {.raises: [].} =
   ## Must be called exactly once after a successful createMapping.
+  ## Safe to call again or on an unknown id
+  withSafeLock:
+    if id notin activeMappings:
+      return
   discard plum_destroy_mapping(id)
 
 proc hasMapping*(id: cint): bool {.raises: [].} =