Align CMSG buffers to a void* boundary, fixes crash on architectures with strict alignment

CHANGES entry
26 jobs for 521-align-cmsg-buffers in 9 minutes and 10 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Precheck
passed precheck:debian:sid:amd64 #55135
amd64 docker linux

00:00:15

 
  Build
passed build:centos:centos6:amd64 #55136
amd64 docker linux

00:03:44

passed build:centos:centos7:amd64 #55137
amd64 docker linux

00:03:57

passed build:clang:debian:stretch:amd64 #55138
amd64 docker linux

00:03:57

passed build:clang:debian:stretch:i386 #55142
i386 docker linux

00:03:09

passed build:debian:jessie:amd64 #55139
amd64 docker linux

00:03:53

passed build:debian:sid:amd64 #55141
amd64 docker linux

00:03:58

passed build:debian:sid:i386 #55143
i386 docker linux

00:03:04

passed build:debian:stretch:amd64 #55140
amd64 docker linux

00:02:47

passed pkcs11:build:debian:sid:amd64 #55144
amd64 docker linux

00:02:45

 
  Test
passed install:debian:sid:amd64 #55158
amd64 docker linux

00:02:11

passed pkcs11:systemtest:debian:sid:amd64 #55160
amd64 docker linux

00:04:43

passed pkcs11:unittest:debian:sid:amd64 #55159
amd64 docker linux

00:00:49

passed systemtest:centos:centos6:amd64 #55152
amd64 docker linux

00:04:44

passed systemtest:centos:centos7:amd64 #55153
amd64 docker linux

00:04:47

passed systemtest:debian:jessie:amd64 #55154
amd64 docker linux

00:04:54

passed systemtest:debian:sid:amd64 #55156
amd64 docker linux

00:04:43

passed systemtest:debian:sid:i386 #55157
i386 docker linux

00:04:44

passed systemtest:debian:stretch:amd64 #55155
amd64 docker linux

00:04:50

passed unittest:centos:centos6:amd64 #55145
amd64 docker linux

00:00:50

passed unittest:centos:centos7:amd64 #55146
amd64 docker linux

00:00:53

passed unittest:clang:debian:stretch:amd64 #55150
amd64 docker linux

00:00:42

passed unittest:debian:jessie:amd64 #55147
amd64 docker linux

00:00:53

passed unittest:debian:sid:amd64 #55149
amd64 docker linux

00:00:48

passed unittest:debian:sid:i386 #55151
i386 docker linux

00:00:47

passed unittest:debian:stretch:amd64 #55148
amd64 docker linux

00:00:49