improve gcc verification tests
improve gcc verification tests

jvff/FakeIt,OnBeep/FakeIt,OnBeep/FakeIt,skizzay/FakeIt,marco-m/FakeIt,jvff/FakeIt,bowlofstew/FakeIt,amerry/FakeIt,bowlofstew/FakeIt,eranpeer/FakeIt,amerry/FakeIt,eranpeer/FakeIt,marco-m/FakeIt,skizzay/FakeIt