Compiling from Mar2018 branch, today's hg tip, with production settings:

    --disable-debug --disable-developer --disable-assert --enable-optimize

Fails with this on Fedora 28:

In file included from /usr/include/string.h:494,

                 from /home/roberto/MonetDBServer/MonetDB.Spinque_Mar2018/src/gdk/gdk.h:316,

                 from /home/roberto/MonetDBServer/MonetDB.Spinque_Mar2018/src/gdk/gdk_calc.c:10:

In function ‘memcpy’,

    inlined from ‘addstr_loop’ at /home/roberto/MonetDBServer/MonetDB.Spinque_Mar2018/src/gdk/gdk_calc.c:3415:3:

/usr/include/bits/string_fortified.h:34:10: error: ‘__builtin_memcpy’ forming offset [3, 65535] is out of the bounds [0, 2] of object ‘str_nil’ with type ‘const char[2]’ [-Werror=array-bounds]

   return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest));

          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

(same error in several files)

Compiling with debug settings succeeds:

    --enable-debug --enable-developer --enable-assert --disable-optimize

Is this reproducible or has it something to do with my machine?