diff options
author | Stephane Glondu <steph@glondu.net> | 2009-02-01 00:54:40 +0100 |
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committer | Stephane Glondu <steph@glondu.net> | 2009-02-01 00:54:40 +0100 |
commit | cfbfe13f5b515ae2e3c6cdd97e2ccee03bc26e56 (patch) | |
tree | b7832bd5d412a5a5d69cb36ae2ded62c71124c22 /test-suite/bugs/closed/shouldsucceed/1925.v | |
parent | 113b703a695acbe31ac6dd6a8c4aa94f6fda7545 (diff) |
Imported Upstream version 8.2~rc2+dfsgupstream/8.2.rc2+dfsg
Diffstat (limited to 'test-suite/bugs/closed/shouldsucceed/1925.v')
-rw-r--r-- | test-suite/bugs/closed/shouldsucceed/1925.v | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/shouldsucceed/1925.v b/test-suite/bugs/closed/shouldsucceed/1925.v new file mode 100644 index 00000000..17eb721a --- /dev/null +++ b/test-suite/bugs/closed/shouldsucceed/1925.v @@ -0,0 +1,22 @@ +(* Check that the analysis of projectable rel's in an evar instance is up to + aliases *) + +Require Import List. + +Definition compose (A B C : Type) (g : B -> C) (f : A -> B) : A -> C := + fun x : A => g(f x). + +Definition map_fuse' : + forall (A B C : Type) (g : B -> C) (f : A -> B) (xs : list A), + (map g (map f xs)) = map (compose _ _ _ g f) xs + := + fun A B C g f => + (fix loop (ys : list A) {struct ys} := + match ys as ys return (map g (map f ys)) = map (compose _ _ _ g f) ys + with + | nil => refl_equal nil + | x :: xs => + match loop xs in eq _ a return eq _ ((g (f x)) :: a) with + | refl_equal => refl_equal (map g (map f (x :: xs))) + end + end). |