diff options
| -rw-r--r-- | vis.c | 6 |
1 files changed, 3 insertions, 3 deletions
@@ -1779,7 +1779,7 @@ static bool cmd_filter(Filerange *range, enum CmdOpt opt, const char *argv[]) { break; } - if (FD_ISSET(pin[1], &wfds)) { + if (pin[1] != -1 && FD_ISSET(pin[1], &wfds)) { Filerange junk = *range; if (junk.end > junk.start + PIPE_BUF) junk.end = junk.start + PIPE_BUF; @@ -1798,7 +1798,7 @@ static bool cmd_filter(Filerange *range, enum CmdOpt opt, const char *argv[]) { } } - if (FD_ISSET(pout[0], &rfds)) { + if (pout[0] != -1 && FD_ISSET(pout[0], &rfds)) { char buf[BUFSIZ]; ssize_t len = read(pout[0], buf, sizeof buf); if (len > 0) { @@ -1814,7 +1814,7 @@ static bool cmd_filter(Filerange *range, enum CmdOpt opt, const char *argv[]) { } } - if (FD_ISSET(perr[0], &rfds)) { + if (perr[0] != -1 && FD_ISSET(perr[0], &rfds)) { char buf[BUFSIZ]; ssize_t len = read(perr[0], buf, sizeof buf); if (len > 0) { |