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| author |  Maxime Dénès <mail@maximedenes.fr> | 2015-10-28 11:16:24 +0100 |
|---|---|---|
| committer | Maxime Dénès <mail@maximedenes.fr> | 2015-10-28 16:57:55 +0100 |
| commit | 4f8a9d10123bd8aa4d17853a7248d3b3fe8a3625 (patch) | |
| tree | 8cc009910ac8166f477f9425f98a075cac5d889a /kernel/cbytecodes.ml | |
| parent | 90dfacaacfec8265b11dc9291de9510f515c0081 (diff) | |
Refine Gregory Malecha's patch on VM and universe polymorphism.
- Universes are now represented in the VM by a structured constant containing the
global levels. This constant is applied to local level variables if any.
- When reading back a universe, we perform the union of these levels and return
a [Vsort].
- Fixed a bug: structured constants could contain local universe variables in
constructor arguments, which has to be prevented.
Was showing up for instance when evaluating [cons _ list (nil _)] with
a polymorphic [list] type.
- Fixed a bug: polymorphic inductive types can have an empty stack.
Was showing up when evaluating [bool] with a polymorphic [bool] type.
- Made a few cosmetic changes.
Patch written with Benjamin Grégoire.
Diffstat (limited to 'kernel/cbytecodes.ml')
| -rw-r--r-- | kernel/cbytecodes.ml | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/cbytecodes.ml b/kernel/cbytecodes.ml index b13b0607b..0a24a75d6 100644 --- a/kernel/cbytecodes.ml +++ b/kernel/cbytecodes.ml @@ -19,6 +19,7 @@ type tag = int let accu_tag = 0 +let type_atom_tag = 2 let max_atom_tag = 2 let proj_tag = 3 let fix_app_tag = 4 |