StructType opaque->sized

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#1

I'm building a StructType without a body using

  StructType *StructType::create(LLVMContext &Context, StringRef Name);

and then later adding a body to with setBody(). It starts of isOpaque() == true, and isSized() == false, and after I add the body, isOpaque() == false, but isSized() is still false.

If I create a StructType using

  StructType * StructType ::create(LLVMContext &Context,
                            ArrayRef<Type*> Elements,
                            StringRef Name,
                            bool isPacked = false);

Then isOpaque() == false and isSized() == true.

Can I not make a sized struct starting with an opaque one and adding a body later?

#2

Hi Rick,

I'm building a StructType without a body using

  StructType *StructType::create(LLVMContext &Context, StringRef Name);

and then later adding a body to with setBody(). It starts of isOpaque() == true, and isSized() == false, and after I add the body, isOpaque() == false, but isSized() is still false.

this is the standard way of making a struct type, so I suspect you made a
mistake such as adding an opaque field to the struct (this will stop it from
having a size).

Ciao, Duncan.

#3

Thank you, Duncan. You're absolutely right. I thought I had confirmed the broken behavior with a simple test case, but that had a problem. I discovered in my actual struct that I was setting an element to be a function type, not a pointer-to-function type, just as you were writing your reply, I'd bet.

Thanks!