Vector convenience functions cause errors on nightly Julia builds

[dingraha]

When I try to create eg a vector of Section structs with nightly builds of Julia, like this:

(jl_DjwQyJ) pkg> using CCBlade
ERROR: `using` is not a recognized command. Type ? for help with available commands

julia> using CCBlade

julia> radii = range(0.1, 1.0; length=10)
0.1:0.1:1.0

julia> chord = similar(radii)
10-element Vector{Float64}:
 6.9368548214818e-310
 6.9369127073666e-310
 6.93690470785607e-310
 6.93685482148497e-310
 6.9369056525649e-310
 6.93685482148813e-310
 6.9368548214913e-310
 6.93691005160844e-310
 6.9369127073666e-310
 6.9369057171642e-310

julia> theta = similar(radii)
10-element Vector{Float64}:
 5.4e-323
 5.0e-324
 5.0e-323
 4.4e-323
 4.0e-323
 3.5e-323
 2.5e-323
 3.0e-323
 2.0e-323
 1.5e-323

julia> sections = Section.(radii, chord, theta, alpha->(1.0, 1.0))
ERROR: type Section has no field ref
Stacktrace:
  [1] _broadcast_getindex_evalf
    @ ./broadcast.jl:677 [inlined]
  [2] _broadcast_getindex
    @ ./broadcast.jl:650 [inlined]
  [3] getindex
    @ ./broadcast.jl:604 [inlined]
  [4] copy
    @ ./broadcast.jl:910 [inlined]
  [5] materialize
    @ ./broadcast.jl:871 [inlined]
  [6] getproperty(obj::Vector{Section{Float64, var"#7#8"}}, sym::Symbol)
    @ CCBlade ~/.julia/packages/CCBlade/5jTbo/src/CCBlade.jl:91
  [7] dataids(A::Vector{Section{Float64, var"#7#8"}})
    @ Base ./abstractarray.jl:1555
  [8] mightalias
    @ Base ./abstractarray.jl:1530 [inlined]
  [9] unalias
    @ Base ./abstractarray.jl:1495 [inlined]
 [10] broadcast_unalias
    @ Base.Broadcast ./broadcast.jl:945 [inlined]
 [11] preprocess
    @ Base.Broadcast ./broadcast.jl:952 [inlined]
 [12] preprocess_args (repeats 2 times)
    @ Base.Broadcast ./broadcast.jl:954 [inlined]
 [13] preprocess
    @ Base.Broadcast ./broadcast.jl:951 [inlined]
 [14] copyto!
    @ Base.Broadcast ./broadcast.jl:968 [inlined]
 [15] copyto!
    @ Base.Broadcast ./broadcast.jl:924 [inlined]
 [16] copy
    @ Base.Broadcast ./broadcast.jl:896 [inlined]
 [17] materialize(bc::Base.Broadcast.Broadcasted{Base.Broadcast.DefaultArrayStyle{1}, Nothing, Type{Section}, Tuple{StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, Vector{Float64}, Vector{Float64}, Base.RefValue{var"#7#8"}}})
    @ Base.Broadcast ./broadcast.jl:871
 [18] top-level scope
    @ REPL[8]:1

julia> versioninfo()
Julia Version 1.11.0-DEV.1187
Commit ca0a266e4f6 (2024-01-03 13:34 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 12 × Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz
  WORD_SIZE: 64
  LLVM: libLLVM-15.0.7 (ORCJIT, skylake)
Threads: 1 default, 0 interactive, 1 GC (on 12 virtual cores)
Environment:
  JULIA_PKG_SERVER = us-east.pkg.julialang.org

(jl_DjwQyJ) pkg> st
Status `/tmp/jl_DjwQyJ/Project.toml`
  [e1828068] CCBlade v0.2.5

(jl_DjwQyJ) pkg> 

I get an error that appears to be related to the convenience functions used to access individual fields of a Vector{<:Section}:

CCBlade.jl/src/CCBlade.jl

Line 90 in 50ba0be

function Base.getproperty(obj::AbstractVector{<:Section}, sym::Symbol)

If I remove that function, then the error goes away:

shell> nvr ./dev/CCBlade/src/CCBlade.jl # Remove Base.getproperty(obj::AbstractVector{<:Section}, sym::Symbol)

julia> using CCBlade
Precompiling CCBlade
  1 dependency successfully precompiled in 3 seconds. 59 already precompiled.

julia> radii = range(0.1, 1.0; length=10)
0.1:0.1:1.0

julia> chord = similar(radii)
10-element Vector{Float64}:
 6.9321471006254e-310
 6.9321549093946e-310
 6.93215490939933e-310
 6.93215490940407e-310
 6.9321471855873e-310
 6.93214830413057e-310
 6.93215490940723e-310
 6.9321549094104e-310
 6.93215490941356e-310
 6.9321549094167e-310

julia> theta = similar(radii)
10-element Vector{Float64}:
 0.0
 1.390671161567e-309
 0.0
 0.0
 1.390671161567e-309
 0.0
 0.0
 1.265e-321
 0.0
 0.0

julia> sections = Section.(radii, chord, theta, alpha->(1.0, 1.0))
10-element Vector{Section{Float64, var"#7#8"}}:
 Section{Float64, var"#7#8"}(0.1, 6.9321471006254e-310, 0.0, var"#7#8"())
 Section{Float64, var"#7#8"}(0.2, 6.9321549093946e-310, 1.390671161567e-309, var"#7#8"())
 Section{Float64, var"#7#8"}(0.3, 6.93215490939933e-310, 0.0, var"#7#8"())
 Section{Float64, var"#7#8"}(0.4, 6.93215490940407e-310, 0.0, var"#7#8"())
 Section{Float64, var"#7#8"}(0.5, 6.9321471855873e-310, 1.390671161567e-309, var"#7#8"())
 Section{Float64, var"#7#8"}(0.6, 6.93214830413057e-310, 0.0, var"#7#8"())
 Section{Float64, var"#7#8"}(0.7, 6.93215490940723e-310, 0.0, var"#7#8"())
 Section{Float64, var"#7#8"}(0.8, 6.9321549094104e-310, 1.265e-321, var"#7#8"())
 Section{Float64, var"#7#8"}(0.9, 6.93215490941356e-310, 0.0, var"#7#8"())
 Section{Float64, var"#7#8"}(1.0, 6.9321549094167e-310, 0.0, var"#7#8"())

julia> versioninfo()
Julia Version 1.11.0-DEV.1187
Commit ca0a266e4f6 (2024-01-03 13:34 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 12 × Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz
  WORD_SIZE: 64
  LLVM: libLLVM-15.0.7 (ORCJIT, skylake)
Threads: 1 default, 0 interactive, 1 GC (on 12 virtual cores)
Environment:
  JULIA_PKG_SERVER = us-east.pkg.julialang.org

julia> 

I know CCBlade doesn't use Julia nightly builds for testing, but I recently ran into this and thought I'd bring it up. The error doesn't occur with any of the stable Julia builds—I checked 1.9.4 and 1.10.0 today.