Error compiling coreutils - error: function might be candidate for attribute 'const' [-Werror=suggest-attribute=const]

I try to compile coreutils on Ubuntu 18.4. Here is what I did so far:

sudo apt install bison gperf make textinfogit clone git://git.sv.gnu.org/coreutilscd coreutils./bootstrap./configuremake

This ends in an error saying:

lib/acl-internal.c: In function 'free_permission_context':lib/acl-internal.c:479:1: error: function might be candidate for attribute 'const' [-Werror=suggest-attribute=const] free_permission_context (struct permission_context *ctx) ^~~~~~~~~~~~~~~~~~~~~~~cc1: all warnings being treated as errorsMakefile:9808: recipe for target 'lib/acl-internal.o' failedmake[2]: *** [lib/acl-internal.o] Error 1make[2]: Leaving directory '/path/to/coreutils'Makefile:12445: recipe for target 'all-recursive' failedmake[1]: *** [all-recursive] Error 1make[1]: Leaving directory '/path/to/coreutils'Makefile:6556: recipe for target 'all' failedmake: *** [all] Error 2