many tests fail with gccgo

$ go test -compiler gccgo launchpad.net/gocheck
...
OOPS: 76 passed, 48 FAILED
--- FAIL: Test (0.21 seconds)
FAIL
FAIL launchpad.net/gocheck 0.230s

This mostly seems to be around type names in error messages being more qualified than gocheck expects or wants, for example:

FAIL: benchmark_test.go:18: net_gocheck_test.TestBasicTestTiming.pN37_launchpad.net_gocheck_test.BenchmarkS

benchmark_test.go:26:
    c.Assert(output.value, Matches, expected)
... value string = "" +
... "PASS: gocheck_test.go:135: net_gocheck_test.Test1.pN40_launchpad.net_gocheck_test.FixtureHelper\t0.001s\n" +
... "PASS: gocheck_test.go:139: net_gocheck_test.Test2.pN40_launchpad.net_gocheck_test.FixtureHelper\t0.000s\n"
... regex string = "" +
... "PASS: gocheck_test\\.go:[0-9]+: FixtureHelper\\.Test1\t0\\.001s\n" +
... "PASS: gocheck_test\\.go:[0-9]+: FixtureHelper\\.Test2\t0\\.000s\n"

but debugging the tests of a testing library is stretching my go abilities, to put it mildly :)