zig compiler bug

1 - vm.h

typedef const struct InvocationTable_ *VM;

struct VM_ {
    const struct InvocationTable_ *functions;
};

struct InvocationTable_ {
    int (*GetVM)(VM *vm);
}; 

int agent_callback(VM *vm, char *options);

2 - translated_vm.zig

// ~> zig translate-c --verbose-cimport vm.h

pub const VM = ?[*]const struct_InvocationTable_;
pub const struct_InvocationTable_ = extern struct {
    GetVM: ?extern fn(?[*]VM) c_int,
};

pub const struct_VM_ = extern struct {
    functions: ?[*]const struct_InvocationTable_,
};

//excised output from stdlib.h etc

pub const InvocationTable_ = struct_InvocationTable_;
pub const VM_ = struct_VM_;

3 - vm.zig

const vm = @cImport({ @cInclude("vm.h"); });

export fn agent_callback(_vm: [*]vm.VM, options: [*]u8) i32 {
    return 0;
}

4 - build.sh

zig -isystem . build-lib vm.zig

vm.zig:1:12: error: compiler bug: @cImport generated invalid zig code
const vm = @cImport({ @cInclude("vm.h"); });
           ^
?.c:1:1: note: 'VM' depends on itself
TODO: remember C source location to display here
^