Sizeof a struct which contains a function pointer

LLVM Project
1

I am using LLVM 10.0.0 on Mac OS.

I try to use LLVMSizeOf(type1), where type1 is a struct which contains a function pointer,
It is dumped out as

 { i8* (i32, i32) }

However I got error, at the following frame.
[libLLVM.dylib+0x2a4b74] llvm::PointerType::get(llvm::Type*, unsigned int)+0x14

Is it league to size of a struct which contains a function pointer? Do I need to do something special for it?

(I use java binding llvm, so I don’t have exact error message)