// Test for message: constant in conditional context [161]
// This message is not used. There is no evidence that it detects real bugs,
// instead it produces noise for perfectly valid code.
/* lint1-extra-flags: -h -X 351 */
void
while_1(void)
{
/* was: warning: constant in conditional context [161] */
while (1)
continue;
}
void
while_0(void)
{
/* was: warning: constant in conditional context [161] */
while (0) {
/* expect+1: warning: 'continue' statement not reached [193] */
continue;
}
}
/*
* The pattern 'do { } while (0)' is a common technique to define a
* preprocessor macro that behaves like a single statement. There is
* nothing unusual or surprising about the constant condition.
* Before tree.c 1.202 from 2021-01-31, lint warned about it.
*/
void
do_while_0(void)
{
do {
} while (0);
}
void
do_while_1(void)
{
do {
/* was: warning: constant in conditional context [161] */
} while (1);
}
extern void println(const char *);
/*
* Since 2021-02-28, lint no longer warns about constant controlling
* expressions involving sizeof since these are completely legitimate.
*/
void
test_sizeof(void)
{
if (sizeof(int) > sizeof(char))
println("very probable");
if (sizeof(int) < sizeof(char))
println("impossible");
}
