https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86238

            Bug ID: 86238
           Summary: a vtable layout bug
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zhonghao at pku dot org.cn
  Target Milestone: ---

Created attachment 44303
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44303&action=edit
testcase

The code sample is attached. 

clang++ produces many errors when compiling the attached code, but g++ does not
produce any errors. 

I thought that this is clang bug, so I reported it to
https://bugs.llvm.org/show_bug.cgi?id=37720. 


Richard Smith said that the errors of clang are correct. So, is this a bug in
g++?

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