[Bug symtab/17272] DW_TAG_GNU_template_parameter_pack

["dblaikie at gmail dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=17272

David Blaikie <dblaikie at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |dblaikie at gmail dot com

--- Comment #12 from David Blaikie <dblaikie at gmail dot com> ---
(In reply to Ed Catmur from comment #11)
> Resent just now (no changes, just a better description):
> https://sourceware.org/pipermail/gdb-patches/2023-February/196618.html

Tried testing this with Clang's debug info (based on your request
https://sourceware.org/bugzilla/show_bug.cgi?id=28946#c6 ) & at least for the
test case I had in mind/where I think the issue is visible, this patch didn't
seem to help.

Here's what I tried:
```
template<typename T, typename ...Ts>
struct single_and_pack {
};
int main() {
  single_and_pack<int, int> sap;
}
```
```
clang++ pack.cpp -g
```
```
gdb ./a.out
$ start
$ ptype sap
type = struct single_and_pack<int, int> [with T = int] {
    <no data fields>
}
```
There's the `T = int` part, but nothing for `Ts = {int}` or similar.
(I did get some errors about `No module named 'gdb'` in case that's relevant -
maybe something to do with how I'd build gdb)
& it's possible I've messed up some application of the patch to building gdb -
(I've had issues with lldb, for instance, where lldb is built - but it uses my
system installed lldb .so, so I was still getting the old behavior, not sure if
something similar might be happening with gdb)

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