Add comments about lookupSymbol

diff --git a/src/GHC/HeapView.hs b/src/GHC/HeapView.hs
index 27ee2d7..9e4d9d2 100644 (file)
--- a/src/GHC/HeapView.hs
+++ b/src/GHC/HeapView.hs
@@ -300,6 +300,10 @@ data GenClosure b =
         info         :: StgInfoTable 
         , indirectee   :: b
     } |
+    -- In GHCi, if Linker.h would allow a reverse looup, we could for exported
+    -- functions fun actually find the name here.
+    -- At least the other direction works via "lookupSymbol
+    -- base_GHCziBase_zpzp_closure" and yields the same address (up to tags)
     APClosure {
         info         :: StgInfoTable 
         , arity      :: HalfWord