func avoidFunctions() []string {
	if runtime.Compiler == "gccgo" {
		return []string{"runtime.sigprof"}
	}
	return nil
}

func TestCPUProfile(t *testing.T) {
	matches := matchAndAvoidStacks(stackContains, []string{"runtime/pprof.cpuHog1"}, avoidFunctions())
	testCPUProfile(t, matches, func(dur time.Duration) {
		cpuHogger(cpuHog1, &salt1, dur)
	})
}

func TestCPUProfileMultithreaded(t *testing.T) {

	cf.String("benchtime", "", "")
	cf.StringVar(&testBlockProfile, "blockprofile", "", "")
	cf.String("blockprofilerate", "", "")
	cf.Int("count", 0, "")
	cf.String("cpu", "", "")
	cf.StringVar(&testCPUProfile, "cpuprofile", "", "")
	cf.BoolVar(&testFailFast, "failfast", false, "")
	cf.StringVar(&testFuzz, "fuzz", "", "")
	cf.Bool("fullpath", false, "")
	cf.StringVar(&testList, "list", "", "")

	testCacheExpire    time.Time                    // ignore cached test results before this time
	testShouldFailFast atomic.Bool                  // signals pending tests to fail fast

	testBlockProfile, testCPUProfile, testMemProfile, testMutexProfile, testTrace string // profiling flag that limits test to one package

	testODir = false
)

// testProfile returns the name of an arbitrary single-package profiling flag