FYI: I get same compilation problem also with linux-*-4.15.0-23-generic from linux-generic-hwe-16.04-edge on my 32-bit 16.04 LTS!
FYI: I get same compilation problem also with linux-* -4.15.0- 23-generic from linux-generic- hwe-16. 04-edge on my 32-bit 16.04 LTS!