Test Trac #5892

tests/rename/should_fail/T5892a.hs

+{-# LANGUAGE RecordWildCards #-}
+{-# OPTIONS_GHC -Werror #-}
+
+module T5892a where
+
+import Data.Version ( Version( Version, versionBranch ))
+-- Not importing its field: versionTags
+
+foo :: Version -> Version
+foo (Version {..}) -- Pattern match does not bind versionTags 
+  = let versionBranch = []
+    in Version {..}   -- Hence warning here

tests/rename/should_fail/T5892a.stderr

+
+T5892a.hs:12:8: Warning:
+    Fields of `Version' not initialised: Data.Version.versionTags
+    In the expression: Version {..}
+    In the expression: let versionBranch = [] in Version {..}
+    In an equation for `foo':
+        foo (Version {..}) = let versionBranch = [] in Version {..}
+
+<no location info>: 
+Failing due to -Werror.

tests/rename/should_fail/T5892b.hs

+{-# LANGUAGE RecordWildCards #-}
+module T5892b where
+
+import Data.Version ( Version( Version, versionBranch ))
+-- Not importing its field: versionTags
+
+Version{..} = Version [] []
+-- Binds versionBranch only
+
+foo = T5892b.versionBranch
+bar = T5892b.versionTags

tests/rename/should_fail/T5892b.stderr

+
+T5892b.hs:11:7:
+    Not in scope: `T5892b.versionTags'
+    Perhaps you meant `T5892b.versionBranch' (line 7)

tests/rename/should_fail/all.T

@@ -99,3 +99,5 @@ test('T5657', normal, compile_fail, [''])
 test('T5745',
      extra_clean(['T5745a.hi', 'T5745a.o', 'T5745b.hi', 'T5745b.o']),
      multimod_compile_fail, ['T5745', '-v0'])
+test('T5892a', normal, compile_fail, [''])
+test('T5892b', normal, compile_fail, [''])