the gcc-6 testsuite look good in both bionic and cosmic. The autopkg tests look good, except for the linux autopkg test triggered by gcc-6 in cosmic. The trigger is hard-coded in autopkg test, and can be ignored. The kernel doesn't use gcc-6 at all.
The gcc-6-cross and gcc-6-cross-ports packages are successfully built.
the gcc-6 testsuite look good in both bionic and cosmic. The autopkg tests look good, except for the linux autopkg test triggered by gcc-6 in cosmic. The trigger is hard-coded in autopkg test, and can be ignored. The kernel doesn't use gcc-6 at all.
The gcc-6-cross and gcc-6-cross-ports packages are successfully built.