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-rw-r--r--compiler/GHC/CmmToC.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/GHC/CmmToC.hs b/compiler/GHC/CmmToC.hs
index 3608ac7033..6e5ac43ca6 100644
--- a/compiler/GHC/CmmToC.hs
+++ b/compiler/GHC/CmmToC.hs
@@ -251,7 +251,7 @@ pprStmt platform stmt =
-- can't add the @n suffix ourselves, because
-- it isn't valid C.
| CmmNeverReturns <- ret ->
- pprCall platform cast_fn cconv hresults hargs <> semi
+ pprCall platform cast_fn cconv hresults hargs <> semi <> text "__builtin_unreachable();"
| not (isMathFun lbl) ->
pprForeignCall platform (pprCLabel platform CStyle lbl) cconv hresults hargs
_ ->