diff options
| author | Alex Biehl <alexbiehl@gmail.com> | 2017-06-03 20:37:28 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-06-03 20:37:28 +0200 |
| commit | bfb3563f730fd1c973a6611a0fba3435fb1df489 (patch) | |
| tree | 78fe1e944e74c7840bc64cb03ea33b4e23e0ed7e /html-test/src/PatternSyns.hs | |
| parent | 75e1e19d0d6c139c3c7d9b77b2928e6eb286dd48 (diff) | |
Allow user defined signatures for pattern synonyms (#631)
Diffstat (limited to 'html-test/src/PatternSyns.hs')
| -rw-r--r-- | html-test/src/PatternSyns.hs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/html-test/src/PatternSyns.hs b/html-test/src/PatternSyns.hs index 8af5eb23..a8de113c 100644 --- a/html-test/src/PatternSyns.hs +++ b/html-test/src/PatternSyns.hs @@ -20,3 +20,8 @@ data (a :: *) >< b = Empty -- | Pattern for 'Empty' pattern E = Empty + +-- | Earlier ghc versions didn't allow explicit signatures +-- on pattern synonyms. +pattern PatWithExplicitSig :: Eq somex => somex -> FooType somex +pattern PatWithExplicitSig x = FooCtor x |