diff options
Diffstat (limited to 'gnuradio-runtime/lib/buffer.cc')
| -rw-r--r-- | gnuradio-runtime/lib/buffer.cc | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/gnuradio-runtime/lib/buffer.cc b/gnuradio-runtime/lib/buffer.cc index cc9d991c95..5c813294ac 100644 --- a/gnuradio-runtime/lib/buffer.cc +++ b/gnuradio-runtime/lib/buffer.cc @@ -340,11 +340,20 @@ void buffer_reader::get_tags_in_range(std::vector<tag_t>& v, { gr::thread::scoped_lock guard(*mutex()); + uint64_t lower_bound = abs_start - d_attr_delay; + // check for underflow and if so saturate at 0 + if (lower_bound > abs_start) + lower_bound = 0; + uint64_t upper_bound = abs_end - d_attr_delay; + // check for underflow and if so saturate at 0 + if (upper_bound > abs_end) + upper_bound = 0; + v.clear(); std::multimap<uint64_t, tag_t>::iterator itr = - d_buffer->get_tags_lower_bound(std::min(abs_start, abs_start - d_attr_delay)); + d_buffer->get_tags_lower_bound(lower_bound); std::multimap<uint64_t, tag_t>::iterator itr_end = - d_buffer->get_tags_upper_bound(std::min(abs_end, abs_end - d_attr_delay)); + d_buffer->get_tags_upper_bound(upper_bound); uint64_t item_time; while (itr != itr_end) { |