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-rw-r--r--testsuite/tests/rts/T5423.hs2
1 files changed, 2 insertions, 0 deletions
diff --git a/testsuite/tests/rts/T5423.hs b/testsuite/tests/rts/T5423.hs
index cda87048d7..f8be97cd6e 100644
--- a/testsuite/tests/rts/T5423.hs
+++ b/testsuite/tests/rts/T5423.hs
@@ -1,3 +1,5 @@
+-- | Verify that @foreign import prim@ calls with more than 10 arguments
+-- are lowered correctly.
{-# LANGUAGE MagicHash, GHCForeignImportPrim, UnliftedFFITypes #-}