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foot{,client}: handle argc == 0

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Our getopt_long() based argument parser would (correctly) break out of
the while loop immediately. However, we would then proceed and
decrement ‘argc’ by 1, resulting in it being -1.

This was then passed to the terminal constructor, which passed it on
to the client application fork+exec logic. That finally resulted in an
exec(3) failure:

   err: slave.c:339: SHELL=/bin/zsh: failed to execute: No such file or directory
   err: fdm.c:215: no such FD: 7
  info: main.c:604: goodbye
This commit is contained in:
Daniel Eklöf 2022-01-01 21:11:31 +01:00
parent b83daaac46
commit 9f26b250bb
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GPG key ID: 5BBD4992C116573F
2 changed files with 10 additions and 6 deletions
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8
client.c
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@ -124,7 +124,7 @@ main(int argc, char *const *argv)
static const int foot_exit_failure = -36;
int ret = foot_exit_failure;
const char *const prog_name = argv[0];
const char *const prog_name = argc > 0 ? argv[0] : "<nullptr>";
static const struct option longopts[] = {
{"term", required_argument, NULL, 't'},
@ -309,8 +309,10 @@ main(int argc, char *const *argv)
}
}
argc -= optind;
argv += optind;
if (argc > 0) {
argc -= optind;
argv += optind;
}
log_init(log_colorize, false, LOG_FACILITY_USER, log_level);