[Bug c++/106398] ICE in finish_expr_stmt at cp/semantics.c:872 for lambda with conditional noexcept against lambda in unevaluated context

[marxin at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106398

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
                 CC|                            |jason at gcc dot gnu.org,
                   |                            |marxin at gcc dot gnu.org
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2022-07-22

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r9-4045-g0c1e0d63fe0ceabb, it was rejected before the revision
with:

pr106398.c: In function ‘void intersect(const set<T>&, const set<T>&)’:
pr106398.c:13:56: error: lambda-expression in unevaluated context
   13 |   auto f = [&]<typename T1>(T1&& _1) noexcept(decltype([] {
      |                                                        ^
pr106398.c:13:47: error: decltype evaluates to ‘<type error>’, which is not a
class or enumeration type
   13 |   auto f = [&]<typename T1>(T1&& _1) noexcept(decltype([] {
      |                                               ^~~~~~~~