struct-size

/* C struct, size == 192 */
struct apk_package {
	apk_hash_node hash_node;
	union {
		struct apk_solver_package_state ss;
		struct {
			unsigned int foreach_genid;
			union {
				int state_int;
				void *state_ptr;
			};
		};
	};
	struct apk_name *name;
	struct apk_installed_package *ipkg;
	apk_blob_t *version, *arch, *license;
	apk_blob_t *origin, *maintainer;
	char *url, *description, *commit;
	char *filename;
	struct apk_dependency_array *depends, *install_if, *provides;
	size_t installed_size, size;
	time_t build_time;
	unsigned short provider_priority;
	unsigned repos : APK_MAX_REPOS;
	unsigned marked : 1;
	unsigned uninstallable : 1;
	unsigned cached_non_repository : 1;
	struct apk_checksum csum;
};

/* D struct, size == 200 */
struct apk_package
{
    import std.bitmanip : bitfields;

    apk_hash_node hash_node;

    union
    {
        apk_solver_package_state ss;

        struct
        {
            uint foreach_genid;

            union
            {
                int state_int;
                void* state_ptr;
            }
        }
    }

    apk_name* name;
    apk_installed_package* ipkg;
    apk_blob_t* version_;
    apk_blob_t* arch;
    apk_blob_t* license;
    apk_blob_t* origin;
    apk_blob_t* maintainer;
    char* url;
    char* description;
    char* commit;
    char* filename;
    apk_dependency_array* depends;
    apk_dependency_array* install_if;
    apk_dependency_array* provides;
    size_t installed_size;
    size_t size;
    time_t build_time;
    ushort provider_priority;

    mixin(bitfields!(uint, "repos", 32, uint, "marked", 1, uint,
            "uninstallable", 1, uint, "cached_non_repository", 1, uint, "", 29));

    apk_checksum csum;
}