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-rw-r--r--compiler/GHC/Utils/Misc.hs8
1 files changed, 4 insertions, 4 deletions
diff --git a/compiler/GHC/Utils/Misc.hs b/compiler/GHC/Utils/Misc.hs
index 0d5eabeb0b..a115c61336 100644
--- a/compiler/GHC/Utils/Misc.hs
+++ b/compiler/GHC/Utils/Misc.hs
@@ -228,10 +228,10 @@ are of equal length. Alastair Reid thinks this should only happen if
DEBUGging on; hey, why not?
-}
-zipEqual :: String -> [a] -> [b] -> [(a,b)]
-zipWithEqual :: String -> (a->b->c) -> [a]->[b]->[c]
-zipWith3Equal :: String -> (a->b->c->d) -> [a]->[b]->[c]->[d]
-zipWith4Equal :: String -> (a->b->c->d->e) -> [a]->[b]->[c]->[d]->[e]
+zipEqual :: HasDebugCallStack => String -> [a] -> [b] -> [(a,b)]
+zipWithEqual :: HasDebugCallStack => String -> (a->b->c) -> [a]->[b]->[c]
+zipWith3Equal :: HasDebugCallStack => String -> (a->b->c->d) -> [a]->[b]->[c]->[d]
+zipWith4Equal :: HasDebugCallStack => String -> (a->b->c->d->e) -> [a]->[b]->[c]->[d]->[e]
#if !defined(DEBUG)
zipEqual _ = zip