fix namedtuple test case

base/abstractarray.jl

@@ -942,9 +942,11 @@ end
 
 ## from general iterable to any array
 
+function copyto! end
+
 # This is `Experimental.@max_methods 1 function copyto! end`, which is not
 # defined at this point in bootstrap.
-typeof(function copyto! end).name.max_methods = UInt8(1)
+typeof(copyto!).name.max_methods = UInt8(1)
 
 function copyto!(dest::AbstractArray, src)
     destiter = eachindex(dest)

base/namedtuple.jl

@@ -324,7 +324,11 @@ julia> merge((a=1, b=2), (b=3, c=(d=1,)), (c=(d=2,),))
 (a = 1, b = 3, c = (d = 2,))
 ```
 """
-function merge(a::NamedTuple{an}, b::NamedTuple{bn}) where {an, bn}
+merge(a::NamedTuple, b::NamedTuple) = _merge_nt(a, b)::NamedTuple
+
+function _merge_nt end
+typeof(_merge_nt).name.max_methods = UInt8(4)
+function _merge_nt(a::NamedTuple{an}, b::NamedTuple{bn}) where {an, bn}
     if @generated
         names = merge_names(an, bn)
         types = merge_types(names, a, b)
@@ -334,10 +338,9 @@ function merge(a::NamedTuple{an}, b::NamedTuple{bn}) where {an, bn}
         merge_fallback(a, b, an, bn)
     end
 end
-
-merge(a::NamedTuple,     b::NamedTuple{()}) = a
-merge(a::NamedTuple{()}, b::NamedTuple{()}) = a
-merge(a::NamedTuple{()}, b::NamedTuple)     = b
+_merge_nt(a::NamedTuple,     b::NamedTuple{()}) = a
+_merge_nt(a::NamedTuple{()}, b::NamedTuple{()}) = a
+_merge_nt(a::NamedTuple{()}, b::NamedTuple)     = b
 
 merge(a::NamedTuple, b::Iterators.Pairs{<:Any,<:Any,<:Any,<:NamedTuple}) = merge(a, getfield(b, :data))
 

base/tuple.jl

@@ -249,7 +249,8 @@ end
 #  @ tuple.jl:200
 # [4] eltype(t::Type{<:Tuple})
 #  @ tuple.jl:209
-typeof(function eltype end).name.max_methods = UInt8(4)
+function eltype end
+typeof(eltype).name.max_methods = UInt8(4)
 
 # version of tail that doesn't throw on empty tuples (used in array indexing)
 safe_tail(t::Tuple) = tail(t)