Description Dimitry Andric 2024-08-10 23:19:59 UTC

Clang 19 now implements CWG 96 [1], which requires a template argument
list after a 'template' keyword, resulting in errors similar to:

    /wrkdirs/usr/ports/devel/grpc/work/grpc-1.62.2/src/core/lib/promise/detail/basic_seq.h:103:38: error: a template argument list is expected after a name prefixed by the template keyword [-Wmissing-template-arg-list-after-template-kw]
      103 |                     Traits::template CallSeqFactory(f_, *cur_, std::move(arg)));
          |                                      ^

In these cases, appending "<>" is enough to satisfy the constraint.
Upstream has committed a fix to their main branch [2], so pull this in
as a patch and apply it.

[1] https://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#96
[2] https://github.com/grpc/grpc/commit/e55f69cedd0ef7344e0bcb64b5ec9205e6aa4f04