On Ubuntu 16.04:

$ gcc --version
gcc (Ubuntu 5.4.0-6ubuntu1~16.04.5) 5.4.0 20160609
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ make
[...]
In function ‘wcsncpy’,
    inlined from ‘calculate_zip_path’ at ./Modules/getpath.c:797:5:
/usr/include/x86_64-linux-gnu/bits/wchar2.h:200:9: warning: call to ‘__wcsncpy_chk_warn’ declared with attribute warning: wcsncpy called with length bigger than size of destination buffer
  return __wcsncpy_chk_warn (__dest, __src, __n,
         ^
In function ‘wcsncpy’,
    inlined from ‘calculate_zip_path’ at ./Modules/getpath.c:806:9:
/usr/include/x86_64-linux-gnu/bits/wchar2.h:200:9: warning: call to ‘__wcsncpy_chk_warn’ declared with attribute warning: wcsncpy called with length bigger than size of destination buffer
  return __wcsncpy_chk_warn (__dest, __src, __n,
         ^
In function ‘wcsncpy’,
    inlined from ‘calculate_argv0_path’ at ./Modules/getpath.c:683:5:
/usr/include/x86_64-linux-gnu/bits/wchar2.h:200:9: warning: call to ‘__wcsncpy_chk_warn’ declared with attribute warning: wcsncpy called with length bigger than size of destination buffer
  return __wcsncpy_chk_warn (__dest, __src, __n,
         ^
In function ‘wcsncpy’,
    inlined from ‘calculate_argv0_path’ at ./Modules/getpath.c:736:13:
/usr/include/x86_64-linux-gnu/bits/wchar2.h:200:9: warning: call to ‘__wcsncpy_chk_warn’ declared with attribute warning: wcsncpy called with length bigger than size of destination buffer
  return __wcsncpy_chk_warn (__dest, __src, __n,
         ^