restrict to OneTo

Author: JeffFessler

src/trues.jl

@@ -46,7 +46,7 @@ end
 
 # https://github.com/JuliaArrays/FillArrays.jl/issues/148
 function Base.getindex(
-    a::AbstractFill{T, 1, Axes} where Axes,
+    a::AbstractFill{T, 1, Tuple{Base.OneTo{Int}}},
     b::Trues{1, Tuple{Base.OneTo{Int}}}) where T
     @boundscheck length(a) == length(b) || throw(BoundsError(a, b))
     return Fill(getindex_value(a), length(a))