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-rw-r--r--lib/system/gc2.nim2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/system/gc2.nim b/lib/system/gc2.nim
index 705812b56..e68a8586e 100644
--- a/lib/system/gc2.nim
+++ b/lib/system/gc2.nim
@@ -13,6 +13,8 @@
 # and sweep GC to free cycles. It is hard realtime in that if you play
 # according to its rules, no deadline will ever be missed.
 
+# XXX Ensure by smart color masking that the object is not in the ZCT.
+
 when defined(nimCoroutines):
   import arch