remove overload of `Base.tail(t::Tangent{<:NamedTuple{<:Any, <:Tuple{…

…}}})` This fixes many invalidations when loading ChainRulesCore.jl. Fixes JuliaDiff#576.
ranocha · Sep 7, 2022 · 1203f32 · 1203f32
1 parent 07dfe60
commit 1203f32
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/src/tangent_types/tangent.jl b/src/tangent_types/tangent.jl
@@ -107,7 +107,6 @@ Base.tail(t::Tangent{<:Tuple{}}) = NoTangent()
 Base.tail(t::Tangent{P}) where {P<:NamedTuple} = Tangent{_tailtype(P)}(; Base.tail(backing(canonicalize(t)))...)
 _tailtype(::Type{NamedTuple{S,P}}) where {S,P} = NamedTuple{Base.tail(S), _tailtype(P)}
 Base.tail(t::Tangent{<:NamedTuple{<:Any, <:Tuple{Any}}}) = NoTangent()
-Base.tail(t::Tangent{<:NamedTuple{<:Any, <:Tuple{}}}) = NoTangent()
 
 function Base.getindex(tangent::Tangent{P,T}, idx::Int) where {P,T<:Union{Tuple,NamedTuple}}
     back = backing(canonicalize(tangent))