[cfe-dev] ParamDecls missing from function DeclContext

Abramo Bagnara abramo.bagnara at gmail.com
Tue May 15 08:04:58 PDT 2012

Il 15/05/2012 16:36, Douglas Gregor ha scritto:
> On May 15, 2012, at 12:40 AM, Abramo Bagnara wrote:
>> Another much related issue is shown by the following:
>> void sort(int (*compare)(int x, int y), int* x);
>> Which should be the correct context of ParmVarDecl's inside
>> FunctionType (i.e. int x and int y)?
> The DeclContext notion breaks down a little bit here, because we 
> don't create a context for FunctionTypes (and shouldn't). I'd rather
> that the inner ParmVarDecls be in the 'sort's FunctionDecl.

Also if I don't have any problem with this I'd like to understand why
you think that FunctionTypeLoc should not have a pointer to a
DeclContext where the args are registered (that for FunctionDecl
function type is the very same FunctionDecl).

Apart this issue we have added to our AST visitors an experimental
assertion to verify that if the DeclContext for declaration D is DC,
then the DeclContext DC indeed contains declaration D.

We get tons of assertion failures (e.g. for FunctionDecl or
CXXRecordDecl inside a template declaration).

We'd like to understand if this is unexpected (and in general we should
always have that if D points to DC then DC should contains D) or if we
are equivocating the overall design of DeclContext's.

More information about the cfe-dev mailing list