$ cc -O0 -Wall -o harness_O0 harness.c
$ cc -O2 -Wall -o harness_O2 harness.c
$ cc -O2 -Wall -o trigger trigger.c
$ cc -O0 -o raw_div0 raw_div0.c
BUILD_EXIT=0
-rwxr-xr-x  1 maxx  maxx  10120 Jul 14 11:28 harness_O0
-rwxr-xr-x  1 maxx  maxx   9760 Jul 14 11:28 harness_O2
-rwxr-xr-x  1 maxx  maxx   6976 Jul 14 11:28 raw_div0
-rwxr-xr-x  1 maxx  maxx   9128 Jul 14 11:28 trigger