[cfe-dev] Parameter check question

Tanya Lattner lattner at apple.com
Tue Oct 6 15:44:19 PDT 2009


On Oct 5, 2009, at 2:58 PM, Douglas Gregor wrote:

>
> On Oct 5, 2009, at 2:37 PM, Tanya Lattner wrote:
>
>> Hello,
>>
>> I want to do a check on function parameters similar to the  
>> "err_arg_with_address_space" check that I added in  
>> ActOnParamDeclarator (r83165). However, this time, I only want to  
>> perform the check if the function has a specific attribute. Is  
>> ActOnParamDeclarator the right place? I'm not seeing a way to get  
>> the function attribute there. Or, any suggestion on where to add  
>> this?
>
>
> ActOnParamDeclarator won't work, since that gets can get called by  
> the parser before we've seen the function attributes. I suggest  
> putting this check into ActOnFunctionDeclarator (e.g., where we  
> check for parameters of "void" type).
>

Awesome, thanks! At this point in ActOnFunctionDeclarator, do  
parameters know about their attributes? Specifically addr space  
qualifiers. I'm thinking no because it always seems to think the  
param's in addr space 0, but when I dump the QualType I can clearly  
see the addr space attribute and its non zero, but I assume it just  
hasn't been processed yet.

Is there place where both function and params have had their  
attributes seen that I can add a check?

Sorry, new to parsers :)

-Tanya

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