[bug?] function pointer typedefs don't seem to be usable

[thacuber2a03]

I'm trying to see if I can compile rxi's fe with chibicc-uxn, and the former has a bunch of function pointer typedefs it uses all around the code:

typedef fe_Object* (*fe_CFunc)(fe_Context *ctx, fe_Object *args);
typedef void (*fe_ErrorFn)(fe_Context *ctx,  char *err, fe_Object *cl);
typedef void (*fe_WriteFn)(fe_Context *ctx, void *udata, char chr);
typedef char (*fe_ReadFn)(fe_Context *ctx, void *udata);

the typedefs seem to be parsed, but when it comes to actually using them, the compiler fails:

read_file(): allocated 22919 bytes
tokenize(): allocated 453561 bytes (sizeof(Token) = 64)
tmp.c:8: typedef struct { fe_CFunc error; fe_CFunc mark, gc; } fe_Handlers;
                          ^ typename expected

I could definitely change them to void*s, but that would make some parts of the code hard to read (if you're not used to fe's source, which I am)
this is my first issue, so I'm sorry if I'm missing on something, and I'll understand if they're not intended to be supported

[thacuber2a03]

for now I'll change them to void*s and see if it does work
edit: I completely forgot void*s can't be called