#include <stdlib.h>

/**
 * WARNING: Use these with caution as they are dangerous and easy to break!
 * NEVER:
 *   place a dpl_cr_return* inside another switch statement
 *   place two or more dpl_cr_return* statements on the same line
 */
#define dpl_cr_begin       static int __cr_line = 0; switch(__cr_line) { case 0:
#define dpl_cr_finish(n)   } return (n)
#define dpl_cr_finish_void } return

#define dpl_cr_return(z)        \
    do {                        \
        __cr_line = __LINE__;   \
        return (z);             \
        case __LINE__:;         \
    } while (0)

#define dpl_cr_return_void      \
    do {                        \
        __cr_line = __LINE__;   \
        return;                 \
        case __LINE__:;         \
    } while (0)