mdb_iob_stack_size
while (mdb_iob_stack_size(&f.f_istk) != 0) {
mdb_iob_stack_size(&f.f_istk) == 0) {
if (mdb_iob_stack_size(&f.f_istk) == 0)
if (mdb_iob_stack_size(&mdb.m_frame->f_istk) != 0) {
ASSERT(mdb_iob_stack_size(&fp->f_istk) == 0);
ASSERT(mdb_iob_stack_size(&fp->f_ostk) == 0);
while (mdb_iob_stack_size(&fp->f_ostk) != 0) {
extern size_t mdb_iob_stack_size(mdb_iob_stack_t *);