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Avoid unlikely verbose_option overflow

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* src/tar.c (parse_opt, decode_options):
Avoid undefined behavior if verbose_option overflows.
This commit is contained in:
Paul Eggert
2024-11-01 23:18:30 -07:00
parent 04c1b85872
commit 6993486ed8
1 changed files with 3 additions and 3 deletions
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src/tar.c
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@@ -1797,7 +1797,7 @@ parse_opt (int key, char *arg, struct argp_state *state)
case 't':
set_subcommand_option (LIST_SUBCOMMAND);
verbose_option++;
verbose_option += verbose_option <= 2;
break;
case TEST_LABEL_OPTION:
@@ -1825,7 +1825,7 @@ parse_opt (int key, char *arg, struct argp_state *state)
break;
case 'v':
verbose_option++;
verbose_option += verbose_option <= 2;
warning_option |= WARN_VERBOSE_WARNINGS;
break;
@@ -2710,7 +2710,7 @@ decode_options (int argc, char **argv)
/* --test-label is silent if the user has specified the label name to
compare against. */
if (!name_more_files ())
verbose_option++;
verbose_option += verbose_option <= 2;
}
else if (utc_option)
verbose_option = 2;