}
	defer os.RemoveAll(dir)

	const bitLimit = 512
	const charLimit = 10000 // compiler-internal constant length limit
	testProg(dir, "x1", bitLimit, "")
	testProg(dir, "x2", bitLimit+1, "constant overflow")
	testProg(dir, "x3", charLimit-2, "constant overflow") // -2 because literal contains 0b prefix
	testProg(dir, "x4", charLimit-1, "excessively long constant")

		t.Skip("-quick")
	}
	testenv.MustHaveGoBuild(t)

	testprog.Lock()
	if testprog.dir == "" {
		dir, err := os.MkdirTemp("", "go-build")
		if err != nil {
			t.Fatalf("failed to create temp directory: %v", err)
		}
		testprog.dir = dir
		toRemove = append(toRemove, dir)
	}

	if testprog.target == nil {
		testprog.target = make(map[string]*buildexe)
	}
	name := binary
	if len(flags) > 0 {

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !windows && !plan9
// +build !windows,!plan9

// This is in testprognet instead of testprog because testprog
// must not import anything (like net, but also like os/signal)
// that kicks off background goroutines during init.

package main

import (
	"os/signal"
	"syscall"
)

func init() {

// license that can be found in the LICENSE file.

//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd
// +build darwin dragonfly freebsd linux netbsd openbsd

// This is in testprognet instead of testprog because testprog
// must not import anything (like net, but also like os/signal)
// that kicks off background goroutines during init.

package main

import (
	"fmt"
	"os"
	"os/exec"
	"os/signal"
	"sync"

	}
	if strings.HasPrefix(testenv.Builder(), "windows-amd64-2012") {
		testenv.SkipFlaky(t, 49681)
	}
	testenv.MustHaveGoBuild(t)
	testenv.MustHaveCGO(t)
	testenv.MustHaveExecPath(t, "gcc")
	testprog.Lock()
	defer testprog.Unlock()
	dir := t.TempDir()

	// build c program
	dll := filepath.Join(dir, "veh.dll")
	cmd := exec.Command("gcc", "-shared", "-o", dll, "testdata/testwinlibthrow/veh.c")

	})

	// Wait for After1 to close its stdout so that we know the runtime's SIGIO
	// handler is registered.
	b, err := io.ReadAll(stdout)
	if len(b) > 0 {
		t.Logf("read from testprog stdout: %s", b)
	}
	if err != nil {
		t.Fatalf("error reading from testprog: %v", err)
	}

	// Wait for child exit.
	//
	// Note that we must do this after waiting for the write/child end of

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package runtime_test

import "testing"

func TestFreeBSDNumCPU(t *testing.T) {
	got := runTestProg(t, "testprog", "FreeBSDNumCPU")
	want := "OK\n"
	if got != want {
		t.Fatalf("expected %q, but got:\n%s", want, got)
	}

	// so it's somewhat slow.
	if testing.Short() {
		t.Skip("skipping test in -short mode")
	}

	t.Parallel()
	testenv.MustHaveGoRun(t)

	exe, err := buildTestProg(t, "testprog", "-gcflags=all=-d=checkptr=1")
	if err != nil {
		t.Fatal(err)
	}

	testCases := []struct {
		cmd  string
		want string
	}{

		t.Skipf("skipping Fortran test: could not build helloworld.f90 with %s: %s", fc, err)
	}

	// Finally, run the actual test.
	t.Log("go", "run", "./testdata/testprog")
	var stdout, stderr strings.Builder
	cmd := exec.Command("go", "run", "./testdata/testprog")
	cmd.Stdout = &stdout
	cmd.Stderr = &stderr
	err := cmd.Run()
	t.Logf("%v", cmd)
	if stderr.Len() != 0 {
		t.Logf("stderr:\n%s", stderr.String())
	}

	ctx, err := newContext()
	if err != nil {
		log.Fatal(err)
	}
	if err := ctx.runGenerators(); err != nil {
		log.Fatal(err)
	}
	if err := ctx.runTestProg("./testprog/annotations.go"); err != nil {
		log.Fatal(err)
	}
	if err := ctx.runTestProg("./testprog/annotations-stress.go"); err != nil {
		log.Fatal(err)
	}
}

type context struct {
	testNames map[string]struct{}
	filter    *regexp.Regexp
}