diff options
Diffstat (limited to 'libguile/posix.c')
| -rw-r--r-- | libguile/posix.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/libguile/posix.c b/libguile/posix.c index 0b1fe2637..3a8be94e4 100644 --- a/libguile/posix.c +++ b/libguile/posix.c @@ -1486,12 +1486,20 @@ SCM_DEFINE (scm_spawn_process, "spawn", 2, 0, 1, if (SCM_UNBNDP (err_scm)) err_scm = scm_current_error_port (); -#define FDES_FROM_PORT_OR_INTEGER(obj) \ - (scm_is_integer (obj) ? scm_to_int (obj) : SCM_FPORT_FDES (obj)) +#define FDES_FROM_PORT_OR_INTEGER(fd, obj, pos) \ + { \ + if (scm_is_integer (obj)) \ + fd = scm_to_int (obj); \ + else \ + { \ + SCM_VALIDATE_OPFPORT (pos, obj); \ + fd = SCM_FPORT_FDES (obj); \ + } \ + } - in = FDES_FROM_PORT_OR_INTEGER (in_scm); - out = FDES_FROM_PORT_OR_INTEGER (out_scm); - err = FDES_FROM_PORT_OR_INTEGER (err_scm); + FDES_FROM_PORT_OR_INTEGER (in, in_scm, 3); + FDES_FROM_PORT_OR_INTEGER (out, out_scm, 4); + FDES_FROM_PORT_OR_INTEGER (err, err_scm, 5); #undef FDES_FROM_PORT_OR_INTEGER |