t.Fatalf("write empty go_asm.h: %v", err)
			}
			cmd := []string{goTool, "tool", "asm", "-p=main", "-gensymabis", "-o", "symabis"}
			cmd = append(cmd, asms...)
			_, err = runcmd(cmd...)
			if err != nil {
				return err
			}
		}
		var objs []string
		cmd := []string{goTool, "tool", "compile", "-p=main", "-e", "-D", ".", "-importcfg=" + stdlibImportcfgFile(), "-o", "go.o"}
		if len(asms) > 0 {

	}
	t.Logf("testenv.GoTool() = %q", goTool)

	gotInfo, err := os.Stat(goTool)
	if err != nil {
		t.Fatal(err)
	}
	if !os.SameFile(wantInfo, gotInfo) {
		t.Fatalf("%q is not the same file as %q", absWant, goTool)
	}
}

func TestHasGoBuild(t *testing.T) {
	if !testenv.HasGoBuild() {
		switch runtime.GOOS {
		case "js", "wasip1":
			// No exec syscall, so these shouldn't be able to 'go build'.

Laura Kassovic <******@****.***> 1701107622 -0800

Sterling Greene <******@****.***> 1700166003 -0500

			list = append(list, pkg)
		}
	}

	if len(list) == 0 {
		return pkgs, nil
	}

	// Note: usually run as "go tool cover" in which case $GOROOT is set,
	// in which case runtime.GOROOT() does exactly what we want.
	goTool := filepath.Join(runtime.GOROOT(), "bin/go")
	cmd := exec.Command(goTool, append([]string{"list", "-e", "-json"}, list...)...)
	var stderr bytes.Buffer
	cmd.Stderr = &stderr
	stdout, err := cmd.Output()

		// Delta profile collection has a 1s minimum.
		t.Skip("skipping in -short mode")
	}

	testenv.MustHaveGoRun(t)

	gotool, err := testenv.GoTool()
	if err != nil {
		t.Fatalf("error finding go tool: %v", err)
	}

	out, err := testenv.Command(t, gotool, "run", filepath.Join("testdata", "delta_mutex.go")).CombinedOutput()
	if err != nil {

stdout linux/amd64
cp stdout tool.txt

go tool dist list -v
stdout linux/amd64
cp stdout tool-v.txt

go tool dist list -broken
stdout $GOOS/$GOARCH
cp stdout tool-broken.txt

go tool dist list -json
stdout '"GOOS": "linux",\n\s*"GOARCH": "amd64",\n'
cp stdout tool-json.txt

go tool dist list -json -broken
stdout '"GOOS": "'$GOOS'",\n\s*"GOARCH": "'$GOARCH'",\n'
cp stdout tool-json-broken.txt

[short] stop

        tool chain: Tool chain 'clang' (Clang)
        shared library file: build/libs/someLib/shared/libsomeLib.dylib
    Static library 'someLib:staticLibrary'
        build using task: :someLibStaticLibrary
        build type: build type 'debug'
        flavor: flavor 'default'
        target platform: platform '$currentNative'
        tool chain: Tool chain 'clang' (Clang)

	mkerrors="$mkerrors -maix32"
	mksyscall="go run mksyscall_aix_ppc.go -aix"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
aix_ppc64)
	mkerrors="$mkerrors -maix64"
	mksyscall="go run mksyscall_aix_ppc64.go -aix"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
darwin_amd64)
	mkerrors="$mkerrors -m64"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	mkasm="go run mkasm.go"
	;;
darwin_arm64)
	mkerrors="$mkerrors -m64"

	covmeta.cce1b350af34b6d0fb59cc1725f0ee27
	$

Run covdata via "go tool covdata <mode>", where 'mode' is a subcommand
selecting a specific reporting, merging, or data manipulation operation.
Descriptions on the various modes (run "go tool cover <mode> -help" for
specifics on usage of a given mode):

1. Report percent of statements covered in each profiled package

	$ go tool covdata percent -i=profiledir
	cov-example/p	coverage: 41.1% of statements