Non int return function pointer not recognized

[jdkuki]

I a was attempting to create a set of bindings for libtsk: https://github.com/sleuthkit/sleuthkit

Having some trouble on the following struct:

https://github.com/sleuthkit/sleuthkit/blob/develop/tsk/fs/tsk_fs.h#L1000

This struct has several callback/function ptr members. For the members with return type int it appears c-for-go handles this correctly. If the type is something not recognized as built in ex uint8_t, c-for-go is not expanding the type of the member but stopping at the return type. Ex:

// C def
int (*name_cmp) (TSK_FS_INFO *, const char *, const char *);    ///< \internal
// c-for-go out
name_cmp              *func(arg0 []TSK_FS_INFO, arg1 []byte, arg2 []byte) int32

Is correct, but getting

// C def
uint8_t(*block_walk) (TSK_FS_INFO * fs, TSK_DADDR_T start, TSK_DADDR_T end, TSK_FS_BLOCK_WALK_FLAG_ENUM flags, TSK_FS_BLOCK_WALK_CB cb, void *ptr); 
// c-for-go out
block_walk            uint8_t

Sample yml I am working with to tweak:

GENERATOR: 
  PackageName: tsk
  PackageDescription: "Package tsk provides Go bindings for the sleuth kit"
  PackageLicense: "THE AUTOGENERATED LICENSE. ALL THE RIGHTS ARE RESERVED BY ROBOTS."
  Includes: ["tsk/libtsk.h"]
  Options:
    SafeStrings: true
PARSER: 
  SourcesPaths: ["tsk/libtsk.h"]
TRANSLATOR: 
  ConstCharIsString: true
  ConstUCharIsString: false
  ConstRules: 
    defines: eval
  Rules: 
    global: 
      - {action: accept, from: "^TSK_FS_INFO$"}

Full generated output for TSK_FS_INFO

// THE AUTOGENERATED LICENSE. ALL THE RIGHTS ARE RESERVED BY ROBOTS.

// WARNING: This file has automatically been generated on Thu, 16 Feb 2023 12:28:59 PST.
// Code generated by https://git.io/c-for-go. DO NOT EDIT.

package tsk

/*
#include "tsk/libtsk.h"
#include <stdlib.h>
#include "cgo_helpers.h"
*/
import "C"
import "unsafe"

// TSK_FS_INFO as declared in fs/tsk_fs.h:50
type TSK_FS_INFO struct {
	tag                   int32
	inum_count            uint64
	root_inum             uint64
	first_inum            uint64
	last_inum             uint64
	block_count           uint64
	first_block           uint64
	last_block            uint64
	last_block_act        uint64
	block_size            uint32
	dev_bsize             uint32
	block_pre_size        uint32
	block_post_size       uint32
	journ_inum            uint64
	duname                string
	fs_id                 [32]byte
	fs_id_used            uint64
	block_walk            uint8_t
	block_getflags        TSK_FS_BLOCK_FLAG_ENUM
	inode_walk            uint8_t
	file_add_meta         uint8_t
	get_default_attr_type TSK_FS_ATTR_TYPE_ENUM
	load_attrs            uint8_t
	decrypt_block         uint8_t
	istat                 uint8_t
	dir_open_meta         TSK_RETVAL_ENUM
	jopen                 uint8_t
	jblk_walk             uint8_t
	jentry_walk           uint8_t
	fsstat                uint8_t
	name_cmp              *func(arg0 []TSK_FS_INFO, arg1 []byte, arg2 []byte) int32
	fscheck               uint8_t
	close                 *func(fs []TSK_FS_INFO)
	fread_owner_sid       uint8_t
	impl                  unsafe.Pointer
	refead83f4e           *C.TSK_FS_INFO
	allocsead83f4e        interface{}
}