// buildRunProgram is the action for running a binary that has already
// been compiled. We ignore exit status.
func buildRunProgram(b *work.Builder, ctx context.Context, a *work.Action) error {
	cmdline := str.StringList(work.FindExecCmd(), a.Deps[0].Target, a.Args)
	if cfg.BuildN || cfg.BuildX {
		b.Shell(a).ShowCmd("", "%s", strings.Join(cmdline, " "))
		if cfg.BuildN {
			return nil
		}
	}

	base.RunStdin(cmdline)
	return nil

// the target GOOS and GOARCH substituted.
// The -exec flag overrides these defaults.
var ExecCmd []string

// FindExecCmd derives the value of ExecCmd to use.
// It returns that value and leaves ExecCmd set for direct use.
func FindExecCmd() []string {
	if ExecCmd != nil {
		return ExecCmd
	}
	ExecCmd = []string{} // avoid work the second time

				return err
			}

			if i == len(pkgs)-1 {
				err = linkFile(runcmd, pkg.files[0], importcfgfile, ldflags)
				if err != nil {
					return err
				}
				var cmd []string
				cmd = append(cmd, findExecCmd()...)
				cmd = append(cmd, filepath.Join(tempDir, "a.exe"))
				cmd = append(cmd, args...)
				out, err := runcmd(cmd...)
				if err != nil {
					return err
				}
				t.checkExpectedOutput(out)
			}

				base.Fatalf("failed to stop trace: %v", err)
			}
		}()
	}

	ctx, span := trace.StartSpan(ctx, fmt.Sprint("Running ", cmd.Name(), " command"))
	defer span.Done()

	work.FindExecCmd() // initialize cached result

	work.BuildInit()
	work.VetFlags = testVet.flags
	work.VetExplicit = testVet.explicit

	pkgOpts := load.PackageOpts{ModResolveTests: true}