In file included from /usr/include/string.h:548,

                 from /mariadb/10.11/include/m_string.h:35,

                 from /mariadb/10.11/storage/innobase/include/univ.i:45,

                 from /mariadb/10.11/storage/innobase/log/log0recv.cc:27:

In function ‘void* memcpy(void*, const void*, size_t)’,

    inlined from ‘void* recv_buf::memcpy(void*, size_t) const’ at /mariadb/10.11/storage/innobase/log/log0recv.cc:2239:20,

    inlined from ‘const byte* recv_buf::copy_if_needed(const byte*, byte*, recv_buf, size_t)’ at /mariadb/10.11/storage/innobase/log/log0recv.cc:2283:17,

    inlined from ‘recv_sys_t::parse_mtr_result recv_sys_t::parse(source&, bool) [with source = recv_buf; store storing = recv_sys_t::BACKUP]’ at /mariadb/10.11/storage/innobase/log/log0recv.cc:2814:29:

/usr/include/x86_64-linux-gnu/bits/string_fortified.h:29:33: warning: argument 1 null where non-null expected [-Wnonnull]

   29 |   return __builtin___memcpy_chk (__dest, __src, __len,

      |          ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

   30 |                                  __glibc_objsize0 (__dest));

      |                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~

/usr/include/x86_64-linux-gnu/bits/string_fortified.h:29:33: note: in a call to built-in function ‘void* __builtin_memcpy(void*, const void*, long unsigned int)’

In function ‘void* memcpy(void*, const void*, size_t)’,

    inlined from ‘void* recv_buf::memcpy(void*, size_t) const’ at /mariadb/10.11/storage/innobase/log/log0recv.cc:2239:20,

    inlined from ‘const byte* recv_buf::copy_if_needed(const byte*, byte*, recv_buf, size_t)’ at /mariadb/10.11/storage/innobase/log/log0recv.cc:2283:17,

    inlined from ‘recv_sys_t::parse_mtr_result recv_sys_t::parse(source&, bool) [with source = recv_buf; store storing = recv_sys_t::BACKUP]’ at /mariadb/10.11/storage/innobase/log/log0recv.cc:2862:29:

/usr/include/x86_64-linux-gnu/bits/string_fortified.h:29:33: warning: argument 1 null where non-null expected [-Wnonnull]

   29 |   return __builtin___memcpy_chk (__dest, __src, __len,

      |          ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

   30 |                                  __glibc_objsize0 (__dest));

      |                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~

/usr/include/x86_64-linux-gnu/bits/string_fortified.h:29:33: note: in a call to built-in function ‘void* __builtin_memcpy(void*, const void*, long unsigned int)’