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-rw-r--r--lib/system/arc.nim5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/system/arc.nim b/lib/system/arc.nim
index b49a6a63b..88d21643a 100644
--- a/lib/system/arc.nim
+++ b/lib/system/arc.nim
@@ -243,3 +243,8 @@ template tearDownForeignThreadGc* =
 
 proc isObjDisplayCheck(source: PNimTypeV2, targetDepth: int16, token: uint32): bool {.compilerRtl, inl.} =
   result = targetDepth <= source.depth and source.display[targetDepth] == token
+
+when defined(nimPreviewVtables) and not defined(cpp):
+  proc nimGetVTable(p: pointer, index: int): pointer
+        {.compilerRtl, inline, raises: [].} =
+    result = cast[ptr PNimTypeV2](p).vTable[index]