search_proc_maps
assert(search_proc_maps("[stack]", &low, &stack_high) == 0);
assert(search_proc_maps("[vdso]", &low, &high) != 0);
assert(search_proc_maps("[stack]", &low, &high) == 0);
assert(search_proc_maps("[vdso]", &low, &high) == 0);
assert(search_proc_maps("[vdso]", &low, &high) == 0);