diff options
| author |  msozeau <msozeau@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2009-05-20 20:07:00 +0000 |
|---|---|---|
| committer | msozeau <msozeau@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2009-05-20 20:07:00 +0000 |
| commit | 3b585059c16dbfbd0558196549d1130509611b35 (patch) | |
| tree | 39907abe6d4545724511d1194bac9661a8fd9f06 /theories/Numbers | |
| parent | 8a6e3f648fa3171e3583e7c93c8967ac853a0d60 (diff) | |
Many fixes in unification:
- Restore failure when types don't unify in [unify_types] (undoing
r12075) but try to be more clever about cumulativity using the meta's
[instance_status] information.
- Fix second-order abstraction when K is not allowed to ensure that
we don't unify twice with the same subterm in
[w_unify_to_subterm_list]. A more elaborate solution would be give the
list to [w_unify_to_subterm] so that it keeps going when it finds an
already-found instantiation.
- Two "obvious" errors fixed: taking the wrong instance status when
unifying with a meta on the right and forgoting type equations in
[w_merge].
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12136 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'theories/Numbers')
| -rw-r--r-- | theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v b/theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v index d5cb2882c..773807120 100644 --- a/theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v +++ b/theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v @@ -340,7 +340,6 @@ rewrite N.spec_of_N, Z_of_N_abs, Zabs_eq; auto. fold (recursion a f n). apply recursion_wd; auto. red; auto. -red; auto. unfold N.to_N. rewrite N.spec_succ. |