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Diffstat (limited to 'test-suite/bugs/closed/2139.v')
-rw-r--r-- | test-suite/bugs/closed/2139.v | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/2139.v b/test-suite/bugs/closed/2139.v new file mode 100644 index 00000000..a7f35508 --- /dev/null +++ b/test-suite/bugs/closed/2139.v @@ -0,0 +1,24 @@ +(* Call of apply on <-> failed because of evars in elimination predicate *) +Generalizable Variables patch. + +Class Patch (patch : Type) := { + commute : patch -> patch -> Prop +}. + +Parameter flip : forall `{patchInstance : Patch patch} + {a b : patch}, + commute a b <-> commute b a. + +Lemma Foo : forall `{patchInstance : Patch patch} + {a b : patch}, + (commute a b) + -> True. +Proof. +intros. +apply flip in H. + +(* failed in well-formed arity check because elimination predicate of + iff in (@flip _ _ _ _) had normalized evars while the ones in the + type of (@flip _ _ _ _) itself had non-normalized evars *) + +(* By the way, is the check necessary ? *) |