Pcreate_error
warn("failed to create process: %s\n", Pcreate_error(perr));
"%s: %s\n", command, Pcreate_error(err));
command, argv[0], Pcreate_error(gret));
command, Pcreate_error(err));
"failed to execute %s: %s\n", file, Pcreate_error(err)));
Pcreate_error(err), filename);
extern const char *Pcreate_error(int);
Pcreate_error(perr), perr);
Pcreate_error(perr));