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| author |  Pierre-Marie Pédrot <pierre-marie.pedrot@inria.fr> | 2016-10-18 17:39:05 +0200 |
|---|---|---|
| committer | Pierre-Marie Pédrot <pierre-marie.pedrot@inria.fr> | 2016-10-18 17:39:15 +0200 |
| commit | 69401acbe52773a9bef66667587437596f1ea36c (patch) | |
| tree | bf70e06735de349dce9abf894383067e7e700a3d /pretyping/evarsolve.ml | |
| parent | 1929b52db6bc282c60a1a3aa39ba87307c68bf78 (diff) | |
| parent | dff1450d43909e8aeaf8ce2db8bc19be42ee1ab1 (diff) | |
Merge branch 'v8.6'
Diffstat (limited to 'pretyping/evarsolve.ml')
| -rw-r--r-- | pretyping/evarsolve.ml | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/pretyping/evarsolve.ml b/pretyping/evarsolve.ml index c44903e8c..6e5ded152 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) -> |