AssertionError: isCursorDefinition(cursor) with CUDA's __device_builtin__

[maleadt]

Reduced from the CUDA headers:

// from CUDA's vector_types.h
struct __device_builtin__ char1
{
    signed char x;
};

// from CUDA's driver_types.h
enum __device_builtin__ cudaError
{
    cudaSuccess = 0
};

using Clang.Generators

cd(@__DIR__)

options = load_options(joinpath(@__DIR__, "generator.toml"))

args = get_default_args()

headers = ["./bug.h"]

ctx = create_context(headers, args)

build!(ctx)

[ Info: Processing header: combined.h
cursor = CLCursor (Clang.CLEnumDecl) enum (unnamed at ./bug.h:6:6)
ERROR: LoadError: AssertionError: isCursorDefinition(cursor)
Stacktrace:
 [1] collect_top_level_nodes!(nodes::Vector{ExprNode}, cursor::Clang.CLEnumDecl, options::Dict{Any, Any})
   @ Clang.Generators ~/Julia/pkg/Clang/src/generator/top_level.jl:145
 [2] (::CollectTopLevelNode)(dag::ExprDAG, options::Dict{Any, Any})
   @ Clang.Generators ~/Julia/pkg/Clang/src/generator/passes.jl:50
 [3] build!(ctx::Context, stage::Clang.Generators.BuildStage)
   @ Clang.Generators ~/Julia/pkg/Clang/src/generator/context.jl:181
 [4] build!(ctx::Context)
   @ Clang.Generators ~/Julia/pkg/Clang/src/generator/context.jl:172
 [5] top-level scope
   @ ~/Julia/pkg/Clang/bug.jl:13

I'm not sure where that attribute is defined; some versions of Clang seem to actively ignore it:

    case 'd':    // 1 string to match.
      if (memcmp(Name.data()+1, "evice_builtin", 13) != 0)
        break;
      return AttributeCommonInfo::IgnoredAttribute;      // "device_builtin"

Workaround: -D__device_builtin__=__attribute__((unused))