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| author | Pierre-Marie Pédrot | 2016-10-18 10:34:23 +0200 |
|---|---|---|
| committer | Pierre-Marie Pédrot | 2016-10-18 10:34:23 +0200 |
| commit | dff1450d43909e8aeaf8ce2db8bc19be42ee1ab1 (patch) | |
| tree | dc76cb36c6fd8db422595d9134b3bd45b971462d /pretyping | |
| parent | 62fd23efbb4de5415c021dca37ed9f7b4be99729 (diff) | |
| parent | 317ae3b327d201530730ed2cce5f44e8763814d4 (diff) | |
Merge branch 'v8.5' into v8.6
Diffstat (limited to 'pretyping')
| -rw-r--r-- | pretyping/evarconv.ml | 2 | ||||
| -rw-r--r-- | pretyping/evarsolve.ml | 8 |
2 files changed, 9 insertions, 1 deletions
diff --git a/pretyping/evarconv.ml b/pretyping/evarconv.ml index 73f2512431..3680cd777a 100644 --- a/pretyping/evarconv.ml +++ b/pretyping/evarconv.ml @@ -1147,7 +1147,7 @@ let apply_conversion_problem_heuristic ts env evd pbty t1 t2 = let f env evd pbty x y = is_fconv ~reds:ts pbty env evd x y in Success (solve_refl ~can_drop:true f env evd (position_problem true pbty) evk1 args1 args2) - | Evar ev1, Evar ev2 -> + | Evar ev1, Evar ev2 when app_empty -> Success (solve_evar_evar ~force:true (evar_define (evar_conv_x ts) ~choose:true) (evar_conv_x ts) env evd (position_problem true pbty) ev1 ev2) diff --git a/pretyping/evarsolve.ml b/pretyping/evarsolve.ml index a97e248aee..d695d4537b 100644 --- a/pretyping/evarsolve.ml +++ b/pretyping/evarsolve.ml @@ -613,7 +613,13 @@ let define_evar_from_virtual_equation define_fun env evd src t_in_env ty_t_in_si * substitution u1..uq. *) +exception MorePreciseOccurCheckNeeeded + let materialize_evar define_fun env evd k (evk1,args1) ty_in_env = + if Evd.is_defined evd evk1 then + (* Some circularity somewhere (see e.g. #3209) *) + raise MorePreciseOccurCheckNeeeded; + let (evk1,args1) = destEvar (whd_evar evd (mkEvar (evk1,args1))) in let evi1 = Evd.find_undefined evd evk1 in let env1,rel_sign = env_rel_context_chop k env in let sign1 = evar_hyps evi1 in @@ -1553,6 +1559,8 @@ and evar_define conv_algo ?(choose=false) env evd pbty (evk,argsv as ev) rhs = postpone_non_unique_projection env evd pbty ev sols rhs | NotEnoughInformationEvarEvar t -> add_conv_oriented_pb (pbty,env,mkEvar ev,t) evd + | MorePreciseOccurCheckNeeeded -> + add_conv_oriented_pb (pbty,env,mkEvar ev,rhs) evd | NotInvertibleUsingOurAlgorithm _ | MetaOccurInBodyInternal as e -> raise e | OccurCheckIn (evd,rhs) -> |