[Bug c++/90818] New: Lambda with __attribute__ and explicit return type not accepted

[mark.atkinson99 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90818

            Bug ID: 90818
           Summary: Lambda with __attribute__ and explicit return type not
                    accepted
           Product: gcc
           Version: 9.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mark.atkinson99 at gmail dot com
  Target Milestone: ---

A lambda with both __attribute__ and a trailing return type is not accepted.
This compiles ok in clang and in gcc <= 8. Omitting the trailing return type
works ok.

int main()
{
    auto foo = []() __attribute__((cold)) -> bool { return false; };
}