[cfe-dev] determine whether a function take reference parameters

[mats petersson via cfe-dev]

Do you mean "is referenced" (in other words, is used) or "is a reference"
(in other words "may modify the original value in the caller function")?

On 22 May 2017 at 08:21, Big~Newbie via cfe-dev <cfe-dev at lists.llvm.org>
wrote:

> I want to judge whether a function take reference parameters. the sample
> code as "void m(int& a){}", the *a* is referenced!
> I use the following code to access this, but it can't, whats wrong with me?
>
>
> *FunctionDecl *funDecl = callExpr->getDirectCallee();*
> *   ParmVarDecl* decl = funDecl->getParamDecl(i);//i=0*
> *   if(decl->getType()->isReferenceType()) {// I use this to judge
> parameter a is referenced, but cannt!!!*
> *           myfile<<"---Ref type:"<<argNames[i]<<endl;**    }*
>
>
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