Using Val as kernel argument triggers an assertion

Created by: mwarusz

MWE

using KernelAbstractions

@kernel function kernel_val!(a, ::Val{m}) where {m}
  @inbounds a[1] = m
end

let
  a = zeros(1)
  kernel! = kernel_val!(CPU(), 1, 1)
  event = kernel!(a, Val(1))
  wait(event)
end

results in

ERROR: LoadError: LoadError: AssertionError: isexpr(decl, :call)
Stacktrace:
 [1] __kernel(::Expr) at /home/mwarusz/repos/KernelAbstractions.jl/src/macros.jl:10
 [2] @kernel(::LineNumberNode, ::Module, ::Any) at /home/mwarusz/repos/KernelAbstractions.jl/src/KernelAbstractions.jl:41
in expression starting at /home/mwarusz/projects/kernels/val_issue.jl:3
in expression starting at /home/mwarusz/projects/kernels/val_issue.jl:3