// for debugging the compiler, they are not settable using 'go env -w',
		// and so here we use os.Getenv, not cfg.Getenv.
		magic := []string{
			"GOCLOBBERDEADHASH",
			"GOSSAFUNC",
			"GOSSADIR",
			"GOCOMPILEDEBUG",
		}
		for _, env := range magic {
			if x := os.Getenv(env); x != "" {
				fmt.Fprintf(h, "magic %s=%s\n", env, x)
			}
		}

	case "gccgo":

//	$ go tool pprof http.test http.prof
//	(pprof) web
func BenchmarkServer(b *testing.B) {
	b.ReportAllocs()
	// Child process mode;
	if url := os.Getenv("TEST_BENCH_SERVER_URL"); url != "" {
		n, err := strconv.Atoi(os.Getenv("TEST_BENCH_CLIENT_N"))
		if err != nil {
			panic(err)
		}
		for i := 0; i < n; i++ {
			res, err := Get(url)
			if err != nil {
				log.Panicf("Get: %v", err)

	if cfg.BuildContext.CgoEnabled && !cfg.BuildTrimpath {
		for _, name := range []string{"CGO_CFLAGS", "CGO_CPPFLAGS", "CGO_CXXFLAGS", "CGO_LDFLAGS"} {
			appendSetting(name, cfg.Getenv(name))
		}
	}
	appendSetting("GOARCH", cfg.BuildContext.GOARCH)
	if cfg.RawGOEXPERIMENT != "" {
		appendSetting("GOEXPERIMENT", cfg.RawGOEXPERIMENT)
	}
	appendSetting("GOOS", cfg.BuildContext.GOOS)

	ResetProxyEnv()
	defer ResetProxyEnv()
	for _, tt := range proxyFromEnvTests {
		testProxyForRequest(t, tt, func(req *Request) (*url.URL, error) {
			os.Setenv("HTTP_PROXY", tt.env)
			os.Setenv("HTTPS_PROXY", tt.httpsenv)
			os.Setenv("NO_PROXY", tt.noenv)
			os.Setenv("REQUEST_METHOD", tt.reqmeth)
			ResetCachedEnvironment()
			return ProxyFromEnvironment(req)
		})
	}
}

	}
	if _, ok := err.(InsecureAlgorithmError); !ok {
		t.Fatalf("certificate verification returned %v (%T), wanted InsecureAlgorithmError", err, err)
	}

	t.Setenv("GODEBUG", "x509sha1=1")
	if err = cert.CheckSignatureFrom(cert); err != nil {
		t.Fatalf("SHA-1 certificate did not verify with GODEBUG=x509sha1=1: %v", err)
	}
}

				}
			}
		}
	}
}

func TestGoVerify(t *testing.T) {
	// Temporarily enable SHA-1 verification since a number of test chains
	// require it. TODO(filippo): regenerate test chains.
	t.Setenv("GODEBUG", "x509sha1=1")

	for _, test := range verifyTests {
		t.Run(test.name, func(t *testing.T) {
			testVerify(t, test, false)
		})
	}
}

func TestSystemVerify(t *testing.T) {