From 6b4b2caf414f0d3c8b903a2e613ad38af46bfd1a Mon Sep 17 00:00:00 2001
From: Araq <rumpf_a@web.de>
Date: Sat, 21 Feb 2026 07:24:53 +0100
Subject: [PATCH] YRC improvements: wip

---
 lib/system/seqs_v2.nim | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/lib/system/seqs_v2.nim b/lib/system/seqs_v2.nim
index 9ac756aacf..5a3e437012 100644
--- a/lib/system/seqs_v2.nim
+++ b/lib/system/seqs_v2.nim
@@ -46,16 +46,19 @@ when defined(gcYrc):
 
   template yrcCollectorLock(body: untyped) =
     if lockState == HasMutatorLock: releaseMutatorLock()
-    let hadToAcquire = lockState < HasCollectorLock
+    let prevState = lockState
+    let hadToAcquire = prevState < HasCollectorLock
     if hadToAcquire:
       acquireWrite(gYrcGlobalLock)
-    lockState = HasCollectorLock
+      lockState = HasCollectorLock
+    # else: keep lockState as-is (could be Collecting)
     try:
       body
     finally:
       if hadToAcquire:
         releaseWrite(gYrcGlobalLock)
-      lockState = HasNoLock
+      lockState = prevState
+
 else:
   template yrcMutatorLock*(body: untyped) =
     body