illumos gate

From the Joyent bug report:

dtrace -qn 'typedef enum { a, b } a_t; BEGIN{ print(a); print(b); }'
enum  a
enum  a
dtrace -q -n 'BEGIN{ print((boolean_t)1); print((boolean_t)0); }'
boolean_t B_FALSE
boolean_t B_FALSE

If we look at the code:

456 static void
457 dt_print_enum(ctf_id_t base, ulong_t off, dt_printarg_t *pap)
458 {
459         FILE *fp = pap->pa_file;
460         ctf_file_t *ctfp = pap->pa_ctfp;
461         const char *ename;
462         int value = 0;
463 
464         if ((ename = ctf_enum_name(ctfp, base, value)) != NULL)
465                 (void) fprintf(fp, "%s", ename);
466         else
467                 (void) fprintf(fp, "%d", value);
468 }

value is hardcoded to zero. So we will never get the correct value from the enum.