[PATCH/RFC] C++ FE: expression ranges (v2)

[Jason Merrill]

On 11/23/2015 12:07 PM, Marek Polacek wrote:
> On Mon, Nov 23, 2015 at 05:57:54PM +0100, Jakub Jelinek wrote:
>> On Mon, Nov 23, 2015 at 11:53:40AM -0500, David Malcolm wrote:
>>> Does the following look like the kind of thing you had in mind?  (just
>>> the tree.def part for now).   Presumably usable for both lvalues and
>>> rvalues, where the thing it wraps is what's important.  It merely exists
>>> to add an EXPR_LOCATION, for a usage of the wrapped thing.
>>
>> Yes, but please see with Jason, Richard and perhaps others if they are ok
>> with that too before spending too much time in that direction.
>> All occurrences of it would have to be folded away during the gimplification
>> at latest, this shouldn't be something we use in the middle-end.
>
> I'd expect LOCATION_EXPR be defined in c-family/c-common.def, not tree.def.
> And I'd think it shouldn't survive genericizing, thus never leak into the ME.

Makes sense.

Jason