Test #8431

testsuite/tests/parser/should_fail/T8431.hs

+)

testsuite/tests/parser/should_fail/T8431.stderr

+
+T8431.hs:1:1: parse error on input `)'

testsuite/tests/parser/should_fail/all.T

@@ -81,3 +81,4 @@ test('T984', normal, compile_fail, [''])
 test('T7848', normal, compile_fail, ['-dppr-user-length=100'])
 test('ExportCommaComma', normal, compile_fail, [''])
 test('T8430', literate, compile_fail, [''])
+test('T8431', normal, compile_fail, ['-XAlternativeLayoutRule'])