传递给Go的C引用无法识别typedef void *？

Question

c.h

typedef void*       MVar;

C_FUNC(
    MVar*     myvar   //[out], return value
)

test.go

var cvar unsafe.Pointer

_ = C.C_FUNC(&cvar)

当我运行test.go时，它会告诉我

cannot use _cgo5 (type *unsafe.Pointer) as type *_Ctype_MVar 
in argument to _Cfunc_C_FUNC

在本文档Command cgo: Go references to C中，它说“ C类型void *由Go的unsafe.Pointer表示。”

Answer 1

cannot use _cgo5 (type *unsafe.Pointer) as type *_Ctype_MVar 
in argument to _Cfunc_C_FUNC