/* expect+2: warning: option 'c' should be handled in the switch [338] */
/* expect+1: warning: option 'd' should be handled in the switch [338] */
while ((o = getopt(argc, argv, "a:bc:d")) != -1) {
switch (o) {
case 'a':
break;
case 'b':
/*
* The following while loop must not finish the check
* for the getopt options.
*/
while (optarg[0] != '\0')
optarg++;
break;
case 'e':
/* expect-1: warning: option 'e' should be listed in the options string [339] */
break;
case 'f':
/* expect-1: warning: option 'f' should be listed in the options string [339] */
/*
* The case labels in nested switch statements are
* ignored by the check for getopt options.
*/
switch (optarg[0]) {
case 'X':
break;
}
break;
case '?':
default:
break;
}
}
/* A while loop that is not related to getopt is simply skipped. */
while (o != 0) {
switch (o) {
case '?':
o = ':';
}
}
return 0;
}
void usage(void);
/*
* Before ckgetopt.c 1.11 from 2021-08-23, lint wrongly warned about a
* missing '?' in the switch statement, even though it was there.
*
* Seen in usr.bin/ftp/main.c 1.127 from 2020-07-18.
*/
int
question_option(int argc, char **argv)
{
int c;
while ((c = getopt(argc, argv, "?x")) != -1) {
switch (c) {
case 'x':
break;
case '?':
usage();
return 0;
default:
usage();
return 1;
}
}
return 0;
}
/*
* If the first character of the options string is ':', getopt does not print
* its own error messages. Getopt returns ':' if an option is missing its
* argument; that is handled by the 'default:' already.
*/
int
suppress_errors(int argc, char **argv)
{
int c;
/* expect+1: warning: option 'o' should be handled in the switch [338] */
while ((c = getopt(argc, argv, ":b:o")) != -1) {
switch (c) {
case 'b':
return 'b';
default:
usage();
}
}
return 0;
}
/*
* If the first character of the options string is ':', getopt returns ':'
* if an option is missing its argument. This condition can be handled
* separately from '?', which getopt returns for unknown options.
*/
int
missing_argument(int argc, char **argv)
{
int c;
/* expect+1: warning: option 'o' should be handled in the switch [338] */
while ((c = getopt(argc, argv, ":b:o")) != -1) {
switch (c) {
case 'b':
return 'b';
case ':':
return 'm';
default:
usage();
}
}
return 0;
}
/*
* Getopt only returns ':' if ':' is the first character in the options
* string. Everywhere else, a ':' marks the preceding option as having a
* required argument. In theory, if the options string contained "a::x",
* that could be interpreted as '-a argument', followed by '-:' and '-x',
* but nobody does that.
*/
int
unreachable_colon(int argc, char **argv)
{
int c;
/* expect+1: warning: option 'b' should be handled in the switch [338] */
while ((c = getopt(argc, argv, "b:")) != -1) {
switch (c) {
/* expect+1: warning: option ':' should be listed in the options string [339] */
case ':':
return 'm';
default:
usage();
}
}
return 0;
}
void
suppressed_warning(int argc, char **argv)
{
int c;
/* expect+2: warning: option 'a' should be handled in the switch [338] */
/* expect+1: warning: option 'b' should be handled in the switch [338] */
while ((c = getopt(argc, argv, "ab")) != -1) {
switch (c) {
}
}
/* LINTED 338 */
while ((c = getopt(argc, argv, "ab")) != -1) {
switch (c) {
}
}
/* expect+2: warning: option 'a' should be handled in the switch [338] */
/* expect+1: warning: option 'b' should be handled in the switch [338] */
while ((c = getopt(argc, argv, "ab")) != -1) {
switch (c) {
}
}
}
