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-rw-r--r--testsuite/tests/th/T18121.hs7
-rw-r--r--testsuite/tests/th/all.T1
2 files changed, 8 insertions, 0 deletions
diff --git a/testsuite/tests/th/T18121.hs b/testsuite/tests/th/T18121.hs
new file mode 100644
index 0000000000..f9efdf378b
--- /dev/null
+++ b/testsuite/tests/th/T18121.hs
@@ -0,0 +1,7 @@
+{-# LANGUAGE TemplateHaskell #-}
+module Bug where
+
+import Language.Haskell.TH
+
+sapply :: Q (TExp (a -> b)) -> Q (TExp a) -> Q (TExp b)
+sapply cf cx = [|| $$cf $$cx ||]
diff --git a/testsuite/tests/th/all.T b/testsuite/tests/th/all.T
index 8e747cbefa..af0774d0a9 100644
--- a/testsuite/tests/th/all.T
+++ b/testsuite/tests/th/all.T
@@ -506,3 +506,4 @@ test('T18097', normal, compile, [''])
test('TH_PprStar', normal, compile, ['-v0 -dsuppress-uniques'])
test('TH_StringLift', normal, compile, [''])
test('TH_BytesShowEqOrd', normal, compile_and_run, [''])
+test('T18121', normal, compile, [''])