diff options
Diffstat (limited to 'testsuite/tests/stranal/should_compile/syn.hs')
| -rw-r--r-- | testsuite/tests/stranal/should_compile/syn.hs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/testsuite/tests/stranal/should_compile/syn.hs b/testsuite/tests/stranal/should_compile/syn.hs new file mode 100644 index 0000000000..6693db70d9 --- /dev/null +++ b/testsuite/tests/stranal/should_compile/syn.hs @@ -0,0 +1,15 @@ +-- !!! THIS TEST IS FOR TYPE SYNONIMS AND FACTORISATION IN THEIR PRESENCE. + +module Test where +data M a = A | B a (M a) +data L a = N | C a (Syn a) +type Syn b = L b + +idL :: L (Syn c) -> L (Syn c) +idL N = N +idL (C x l) = C x (idL l) + +idM:: M (L (Syn x)) -> M (L (Syn x)) +idM A = A +idM (B x l) = B (idL x) (idM l) + |