loop

loop_hello.c

#include <stdio.h>

#define loop() do { \
	fprintf(stderr, "\x1b[36m %s loop      \x1b[0m\n", __func__); \
	_loop(); \
	fprintf(stderr, "\x1b[36m %s exit loop \x1b[0m\n", __func__); \
} while (0)

void _loop(void);

void
_loop(void)
{
	static volatile int not_loop = 0; // set me to 1 with gdb
	if (not_loop)
		return;

	volatile long break_ = 1;
	while (break_ != 0) {
		// to quit: wait ~1s or `break_ = 0` with gdb
		break_++;
		// if (break_ == (long)1e9) { // tune me
		if (break_ == (long)5e8) {
			break;
		}
	}

	return; // breakpoint
}

int
main(int argc, char const *argv[])
{
	loop();
	printf("hello\n");
	return 0;
}