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| author |  letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2011-10-24 23:24:43 +0000 |
|---|---|---|
| committer | letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2011-10-24 23:24:43 +0000 |
| commit | 363706285e6fb257e6298b33904316c3fdef7222 (patch) | |
| tree | 88f2aeb493cd46172edb21fbdb0a1d1dbf6e8455 /library/heads.ml | |
| parent | 63710768d32c5929aa6498aff5aae2f9e0058e95 (diff) | |
Heads: avoid potentially uncaught Not_found via an assert false
The underlying issue (#2608) should be fixed now. In case something
similar happens again, we won't be chasing again a Not_found here.
Same idea as commit r14550, but this initial attempt was too zealous:
we shouldn't also "protect" variable_head, since a Not_found in it is
handled a few lines later.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14588 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'library/heads.ml')
| -rw-r--r-- | library/heads.ml | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/library/heads.ml b/library/heads.ml index 8fda452c1..813031558 100644 --- a/library/heads.ml +++ b/library/heads.ml @@ -80,7 +80,9 @@ let kind_of_head env t = match pi2 (lookup_named id env) with | Some c -> aux k l c b | None -> NotImmediatelyComputableHead) - | Const cst -> on_subterm k l b (constant_head cst) + | Const cst -> + (try on_subterm k l b (constant_head cst) + with Not_found -> assert false) | Construct _ | CoFix _ -> if b then NotImmediatelyComputableHead else ConstructorHead | Sort _ | Ind _ | Prod _ -> RigidHead RigidType |