during the lookup for a base class name, non-type names should be ignored

[llvmbot]

Bugzilla Link	16481
Version	3.2
OS	Windows NT
Reporter	LLVM Bugzilla Contributor
CC	@DougGregor

Extended Description

[class.derived]p2 says:

"During the lookup for a base class name, non-type names are ignored."

So clang should compile this program:

struct x
{};

namespace
{
    namespace x
    {
        struct y : x
        {};
    }
}

[llvmbot]

@llvm/issue-subscribers-clang-frontend

Author: None (llvmbot)

| | | | --- | --- | | Bugzilla Link | [16481](https://llvm.org/bz16481) | | Version | 3.2 | | OS | Windows NT | | Reporter | LLVM Bugzilla Contributor | | CC | @DougGregor |

Extended Description

[class.derived]p2 says:

"During the lookup for a base class name, non-type names are ignored."

So clang should compile this program:

struct x
{};

namespace
{
namespace x
{
struct y : x
{};
}
}

[shafik]

It looks like we have a FIXME for this:

llvm-project/clang/lib/Sema/SemaDecl.cpp

Lines 402 to 406 in b0d5b4d

	// FIXME: LookupNestedNameSpecifierName isn't the right kind of
	// lookup for class-names.
	LookupNameKind Kind = isClassName ? LookupNestedNameSpecifierName :
	LookupOrdinaryName;
	LookupResult Result(*this, &II, NameLoc, Kind);

from 9025ec2

CC @zygoloid who might know of how to fix this correctly

Note:

During the lookup for a base class name, non-type names are ignored.

is not in the standard anymore but it is not clear what replaced it.