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-rw-r--r--libraries/base/GHC/Stack/CCS.hsc2
1 files changed, 2 insertions, 0 deletions
diff --git a/libraries/base/GHC/Stack/CCS.hsc b/libraries/base/GHC/Stack/CCS.hsc
index a8af10a1a1..757acba114 100644
--- a/libraries/base/GHC/Stack/CCS.hsc
+++ b/libraries/base/GHC/Stack/CCS.hsc
@@ -196,6 +196,8 @@ peekInfoProv infop = do
-- The information is collect by looking at the info table address of a specific closure and
-- then consulting a specially generated map (by `-finfo-table-map`) to find out where we think
-- the best source position to describe that info table arose from.
+--
+-- @since 4.16.0.0
whereFrom :: a -> IO (Maybe InfoProv)
whereFrom obj = do
ipe <- getIPE obj