#endif
{
+#ifndef DLM_MAGIC_CONSTANT
#if USE_DEV_RANDOM
int fd;
unsigned char buf[sizeof(size_t)];
#endif
magic |= (size_t)8U; /* ensure nonzero */
magic &= ~(size_t)7U; /* improve chances of fault for bad values */
-#ifdef DLM_MAGIC_CONSTANT
+#else
magic = DLM_MAGIC_CONSTANT;
#endif
/* Until memory modes commonly available, use volatile-write */