[Bug c++/86561] New: a function definition must occur in a standalone declaration

["zhonghao at pku dot org.cn" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86561

            Bug ID: 86561
           Summary: a function definition must occur in a standalone
                    declaration
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zhonghao at pku dot org.cn
  Target Milestone: ---

The code is as follow:

struct S { int f(), g() = delete; };

g++ accepts the code, but clang++ rejects it:

error: '= delete' is a function definition and must occur in a
      standalone declaration
struct S { int f(), g() = delete; };
                          ^
1 error generated.