diff options
author | Matthieu Sozeau <mattam@mattam.org> | 2016-06-16 11:11:01 +0200 |
---|---|---|
committer | Matthieu Sozeau <mattam@mattam.org> | 2016-06-16 18:17:20 +0200 |
commit | 0767b8eace843ee45f2f3fc2b80a13ce6ed336c7 (patch) | |
tree | 2f88fe5ca9a3028ba8f556b2d8d61887a8cf9e0c /test-suite/bugs/closed/3929.v | |
parent | 1a36cf5fd0a3d05255df8d913745aa8c7e19b99c (diff) |
Refine 9cc95f5, unification of Let-In's, bug #3929
We unify types of let-ins in FO heuristic before their bodies, using
cumulativity in either direction. This maintains the invariant that we
are comparing terms in related types throughout unification.
Also adapt test-suite file for bug #3929.
Diffstat (limited to 'test-suite/bugs/closed/3929.v')
-rw-r--r-- | test-suite/bugs/closed/3929.v | 57 |
1 files changed, 56 insertions, 1 deletions
diff --git a/test-suite/bugs/closed/3929.v b/test-suite/bugs/closed/3929.v index 4031dcc45..955581ef2 100644 --- a/test-suite/bugs/closed/3929.v +++ b/test-suite/bugs/closed/3929.v @@ -1,5 +1,36 @@ +Universes i j. +Set Printing Universes. +Set Printing All. +Polymorphic Definition lt@{x y} : Type@{y} := Type@{x}. Goal True. -evar (T:Type). +evar (T:Type@{i}). +set (Z := nat : Type@{j}). simpl in Z. +let Tv:=eval cbv [T] in T in +pose (x:=Tv). +revert x. +refine (_ : let x:=Z in True). +(** This enforces i <= j *) +Fail pose (lt@{i j}). +let Zv:=eval cbv [Z] in Z in +let Tv:=eval cbv [T] in T in +constr_eq Zv Tv. +exact I. +Defined. + +Goal True. +evar (T:nat). +pose (Z:=0). +let Tv:=eval cbv [T] in T in +pose (x:=Tv). +revert x. +refine (_ : let x:=Z in True). +let Zv:=eval cbv [Z] in Z in +let Tv:=eval cbv [T] in T in +constr_eq Zv Tv. +Abort. + +Goal True. +evar (T:Set). pose (Z:=nat). let Tv:=eval cbv [T] in T in pose (x:=Tv). @@ -10,3 +41,27 @@ let Tv:=eval cbv [T] in T in constr_eq Zv Tv. Abort. +Goal forall (A:Type)(a:A), True. +intros A a. +evar (T:A). +pose (Z:=a). +let Tv:=eval cbv delta [T] in T in +pose (x:=Tv). +revert x. +refine (_ : let x:=Z in True). +let Zv:=eval cbv [Z] in Z in +let Tv:=eval cbv [T] in T in +constr_eq Zv Tv. +Abort. + +Goal True. +evar (T:Type). +pose (Z:=nat). +let Tv:=eval cbv [T] in T in +pose (x:=Tv). +revert x. +refine (_ : let x:=Z in True). +let Zv:=eval cbv [Z] in Z in +let Tv:=eval cbv [T] in T in +constr_eq Zv Tv. +Abort. |