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From: "roma.sandu at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/107464] New: Expression error in qualified name lookup with
 lambdas in unevaluated context
Date: Sun, 30 Oct 2022 17:26:23 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 13.0
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X-Bugzilla-Who: roma.sandu at gmail dot com
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107464

            Bug ID: 107464
           Summary: Expression error in qualified name lookup with lambdas
                    in unevaluated context
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: roma.sandu at gmail dot com
  Target Milestone: ---

Created attachment 53795
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D53795&action=3Dedit
Minimal bug repro

I've discovered an interesting bug with unevaluated context lambdas. In the
attached examples, trying to instantiate `boo` with a qualified name result=
s in
an expression error. If we instead bring the name `spooky::boo` into the `e=
vil`
namespace with a `using` statement and instantiate `boo` through an unquali=
fied
name, it works as expected. And finally, if one removes the unevaluated con=
text
lambda in `boo`'s definition, it works in all cases.=