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Diffstat (limited to 'test-suite/bugs/closed/5761.v')
| -rw-r--r-- | test-suite/bugs/closed/5761.v | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/5761.v b/test-suite/bugs/closed/5761.v new file mode 100644 index 00000000..6f28d198 --- /dev/null +++ b/test-suite/bugs/closed/5761.v @@ -0,0 +1,126 @@ +Set Primitive Projections. +Record mix := { a : nat ; b : a = a ; c : nat ; d : a = c ; e : nat ; f : nat }. +Ltac strip_args T ctor := + lazymatch type of ctor with + | context[T] + => match eval cbv beta in ctor with + | ?ctor _ => strip_args T ctor + | _ => ctor + end + end. +Ltac get_ctor T := + let full_ctor := constr:(ltac:(let x := fresh in intro x; econstructor; apply +x) : T -> T) in + let ctor := constr:(fun x : T => ltac:(let v := strip_args T (full_ctor x) in +exact v)) in + lazymatch ctor with + | fun _ => ?ctor => ctor + end. +Ltac uncurry_domain f := + lazymatch type of f with + | forall (a : ?A) (b : @ ?B a), _ + => uncurry_domain (fun ab : { a : A & B a } => f (projT1 ab) (projT2 ab)) + | _ => eval cbv beta in f + end. +Ltac get_of_sigma T := + let ctor := get_ctor T in + uncurry_domain ctor. +Ltac repeat_existT := + lazymatch goal with + | [ |- sigT _ ] => simple refine (existT _ _ _); [ repeat_existT | shelve ] + | _ => shelve + end. + Ltac prove_to_of_sigma_goal of_sigma := + let v := fresh "v" in + simple refine (exist _ _ (fun v => _ : id _ (of_sigma v) = v)); + try unfold of_sigma; + [ intro v; destruct v; repeat_existT + | cbv beta; + repeat match goal with + | [ |- context[projT2 ?k] ] + => let x := fresh "x" in + is_var k; + destruct k as [k x]; cbn [projT1 projT2] + end; + unfold id; reflexivity ]. +Ltac prove_to_of_sigma of_sigma := + constr:( + ltac:(prove_to_of_sigma_goal of_sigma) + : { to_sigma : _ | forall v, id to_sigma (of_sigma v) = v }). +Ltac get_to_sigma_gen of_sigma := + let v := prove_to_of_sigma of_sigma in + eval hnf in (proj1_sig v). +Ltac get_to_sigma T := + let of_sigma := get_of_sigma T in + get_to_sigma_gen of_sigma. +Definition to_sigma := ltac:(let v := get_to_sigma mix in exact v). +(* Error: +In nested Ltac calls to "get_to_sigma", "get_to_sigma_gen", +"prove_to_of_sigma", +"(_ : {to_sigma : _ | forall v, id to_sigma (of_sigma v) = v})" (with +of_sigma:=fun + ab : {_ + : {_ + : {ab : {_ : {a : nat & a = a} & nat} & + projT1 (projT1 ab) = projT2 ab} & nat} & nat} => + {| + a := projT1 (projT1 (projT1 (projT1 (projT1 ab)))); + b := projT2 (projT1 (projT1 (projT1 (projT1 ab)))); + c := projT2 (projT1 (projT1 (projT1 ab))); + d := projT2 (projT1 (projT1 ab)); + e := projT2 (projT1 ab); + f := projT2 ab |}) and "prove_to_of_sigma_goal", last call failed. +Anomaly "Uncaught exception Not_found." Please report at +http://coq.inria.fr/bugs/. +frame @ file "toplevel/coqtop.ml", line 640, characters 6-22 +frame @ file "list.ml", line 73, characters 12-15 +frame @ file "toplevel/vernac.ml", line 344, characters 2-13 +frame @ file "toplevel/vernac.ml", line 308, characters 14-75 +raise @ file "lib/exninfo.ml", line 63, characters 8-15 +frame @ file "lib/flags.ml", line 141, characters 19-40 +raise @ file "lib/exninfo.ml", line 63, characters 8-15 +frame @ file "lib/flags.ml", line 11, characters 15-18 +raise @ file "lib/exninfo.ml", line 63, characters 8-15 +frame @ file "toplevel/vernac.ml", line 167, characters 6-16 +frame @ file "toplevel/vernac.ml", line 151, characters 26-39 +frame @ file "stm/stm.ml", line 2365, characters 2-35 +raise @ file "lib/exninfo.ml", line 63, characters 8-15 +frame @ file "stm/stm.ml", line 2355, characters 4-48 +frame @ file "stm/stm.ml", line 2321, characters 4-100 +raise @ file "lib/exninfo.ml", line 63, characters 8-15 +frame @ file "stm/stm.ml", line 832, characters 6-10 +frame @ file "stm/stm.ml", line 2206, characters 10-32 +raise @ file "lib/exninfo.ml", line 63, characters 8-15 +frame @ file "stm/stm.ml", line 975, characters 8-81 +raise @ file "lib/exninfo.ml", line 63, characters 8-15 +frame @ file "vernac/vernacentries.ml", line 2216, characters 10-389 +frame @ file "lib/flags.ml", line 141, characters 19-40 +raise @ file "lib/exninfo.ml", line 63, characters 8-15 +frame @ file "lib/flags.ml", line 11, characters 15-18 +frame @ file "vernac/command.ml", line 150, characters 4-56 +frame @ file "interp/constrintern.ml", line 2046, characters 2-73 +frame @ file "pretyping/pretyping.ml", line 1194, characters 19-77 +frame @ file "pretyping/pretyping.ml", line 1155, characters 8-72 +frame @ file "pretyping/pretyping.ml", line 628, characters 23-65 +frame @ file "plugins/ltac/tacinterp.ml", line 2095, characters 21-61 +frame @ file "proofs/pfedit.ml", line 178, characters 6-22 +raise @ file "lib/exninfo.ml", line 63, characters 8-15 +frame @ file "proofs/pfedit.ml", line 174, characters 8-36 +frame @ file "proofs/proof.ml", line 351, characters 4-30 +raise @ file "lib/exninfo.ml", line 63, characters 8-15 +frame @ file "engine/proofview.ml", line 1222, characters 8-12 +frame @ file "plugins/ltac/tacinterp.ml", line 2020, characters 19-36 +frame @ file "plugins/ltac/tacinterp.ml", line 618, characters 4-70 +raise @ file "lib/exninfo.ml", line 63, characters 8-15 +frame @ file "plugins/ltac/tacinterp.ml", line 214, characters 6-9 +frame @ file "pretyping/pretyping.ml", line 1198, characters 19-62 +frame @ file "pretyping/pretyping.ml", line 1155, characters 8-72 +raise @ unknown +frame @ file "pretyping/pretyping.ml", line 628, characters 23-65 +frame @ file "plugins/ltac/tacinterp.ml", line 2095, characters 21-61 +frame @ file "proofs/pfedit.ml", line 178, characters 6-22 +raise @ file "lib/exninfo.ml", line 63, characters 8-15 +frame @ file "proofs/pfedit.ml", line 174, characters 8-36 +frame @ file "proofs/proof.ml", line 351, characters 4-30 +raise @ file "lib/exninfo.ml", line 63, characters 8-15 + *) |