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authorGravatar Stephane Glondu <steph@glondu.net>2012-01-12 16:04:54 +0100
committerGravatar Stephane Glondu <steph@glondu.net>2012-01-12 16:04:54 +0100
commit39efc41237ec906226a3a53d7396d51173495204 (patch)
tree87cd58d72d43469d2a2a0a127c1060d7c9e0206b /test-suite/output/rewrite-2172.v
parent5fe4ac437bed43547b3695664974f492b55cb553 (diff)
parent97fefe1fcca363a1317e066e7f4b99b9c1e9987b (diff)
Remove non-DFSG contentsupstream/8.4_beta+dfsg
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+(* This checks an error message as reported in bug #2172 *)
+
+Axiom axiom : forall (E F : nat), E = F.
+Lemma test : forall (E F : nat), E = F.
+Proof.
+ intros.
+(* This used to raise the following non understandable error message:
+
+ Error: Unable to find an instance for the variable x
+
+ The reason this error was that rewrite generated the proof
+
+ "eq_ind ?A ?x ?P ? ?y (axiom ?E ?F)"
+
+ and the equation ?x=?E was solved in the way ?E:=?x leaving ?x
+ unresolved. A stupid hack for solve this consisted in ordering
+ meta=meta equations the other way round (with most recent evars
+ instantiated first - since they are assumed to come first from the
+ user in rewrite/induction/destruct calls).
+*)
+ Fail rewrite <- axiom.