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-rw-r--r--testsuite/tests/parser/should_compile/T13594.hs7
-rw-r--r--testsuite/tests/parser/should_compile/all.T1
2 files changed, 8 insertions, 0 deletions
diff --git a/testsuite/tests/parser/should_compile/T13594.hs b/testsuite/tests/parser/should_compile/T13594.hs
new file mode 100644
index 0000000000..627e38f8fa
--- /dev/null
+++ b/testsuite/tests/parser/should_compile/T13594.hs
@@ -0,0 +1,7 @@
+{-# LANGUAGE BangPatterns #-}
+{-# LANGUAGE GADTs #-}
+{-# LANGUAGE RankNTypes #-}
+module Bug where
+
+x :: forall a . a ~ Integer => forall b. b ~ Integer => (a, b)
+!x = (1, 2)
diff --git a/testsuite/tests/parser/should_compile/all.T b/testsuite/tests/parser/should_compile/all.T
index 2059979765..5cf615ecb0 100644
--- a/testsuite/tests/parser/should_compile/all.T
+++ b/testsuite/tests/parser/should_compile/all.T
@@ -107,3 +107,4 @@ test('T10582', expect_broken(10582), compile, [''])
test('DumpParsedAst', normal, compile, ['-dsuppress-uniques -ddump-parsed-ast'])
test('DumpRenamedAst', normal, compile, ['-dsuppress-uniques -ddump-rn-ast'])
test('DumpTypecheckedAst', normal, compile, ['-dsuppress-uniques -ddump-tc-ast'])
+test('T13594', normal, compile, [''])