diff options
| author | letouzey | 2011-09-15 15:03:32 +0000 |
|---|---|---|
| committer | letouzey | 2011-09-15 15:03:32 +0000 |
| commit | 53e7cfdbece60e775c2b421050ef825c4a8c9d50 (patch) | |
| tree | 06f6fb5d5282fe493706c15b71b0106c33b4d14f | |
| parent | 048172ea92b43b7ba0c6186d20b085f636f5e654 (diff) | |
Re-allowing assumptions during proofs seems safe now (fix #2411)
This restriction was introduce to solve #808, whose underlying
issue (causing a anomaly) doesn't seem active anymore.
Semantic:
- Axiom in the middle of a proof : immediatly usable
(just as a Definition)
- Hypothesis or Variable : not visible in current proof, only
usable in the next ones.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14470 85f007b7-540e-0410-9357-904b9bb8a0f7
| -rw-r--r-- | test-suite/bugs/closed/shouldsucceed/808_2411.v | 27 | ||||
| -rw-r--r-- | toplevel/vernacentries.ml | 3 |
2 files changed, 27 insertions, 3 deletions
diff --git a/test-suite/bugs/closed/shouldsucceed/808_2411.v b/test-suite/bugs/closed/shouldsucceed/808_2411.v new file mode 100644 index 0000000000..1c13e74547 --- /dev/null +++ b/test-suite/bugs/closed/shouldsucceed/808_2411.v @@ -0,0 +1,27 @@ +Section test. +Variable n:nat. +Lemma foo: 0 <= n. +Proof. +(* declaring an Axiom during a proof makes it immediatly + usable, juste as a full Definition. *) +Axiom bar : n = 1. +rewrite bar. +now apply le_S. +Qed. + +Lemma foo' : 0 <= n. +Proof. +(* Declaring an Hypothesis during a proof is ok, + but this hypothesis won't be usable by the current proof(s), + only by later ones. *) +Hypothesis bar' : n = 1. +Fail rewrite bar'. +Abort. + +Lemma foo'' : 0 <= n. +Proof. +rewrite bar'. +now apply le_S. +Qed. + +End test.
\ No newline at end of file diff --git a/toplevel/vernacentries.ml b/toplevel/vernacentries.ml index 2b298f2ac3..2def852aab 100644 --- a/toplevel/vernacentries.ml +++ b/toplevel/vernacentries.ml @@ -376,9 +376,6 @@ let vernac_exact_proof c = save_named true let vernac_assumption kind l nl= - if Pfedit.refining () then - errorlabstrm "" - (str "Cannot declare an assumption while in proof editing mode."); let global = fst kind = Global in List.iter (fun (is_coe,(idl,c)) -> if Dumpglob.dump () then |