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Fix for the case "overwrite element at the end of the file"

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Fixes a crash in mmg when saving chapters to a Matroska file.
This commit is contained in:
Moritz Bunkus 2010-02-11 08:09:03 +01:00
parent 678e86e6e4
commit 2cce28ca43
2 changed files with 16 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2010-02-11 Moritz Bunkus <moritz@bunkus.org>
* mmg, mkvpropedit: Fixed another bug causing a crash writing
chapters/other elements to existing Matroska files.
2010-02-10 Moritz Bunkus <moritz@bunkus.org>
* Build system: bug fix: Improved detection of Boost::Filesystem

11
src/common/kax_analyzer.cpp
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@ -400,6 +400,17 @@ kax_analyzer_c::adjust_segment_size() {
*/
bool
kax_analyzer_c::handle_void_elements(int data_idx) {
// Is the element at the end of the file? If so truncate the file
// and remove the element from the m_data structure if that was
// requested. Then we're done.
if (m_data.size() == (data_idx + 1)) {
m_file->truncate(m_data[data_idx]->m_pos + m_data[data_idx]->m_size);
adjust_segment_size();
if (0 == m_data[data_idx]->m_size)
m_data.erase(m_data.begin() + data_idx);
return false;
}
// Are the following elements EbmlVoid elements?
int end_idx = data_idx + 1;
while ((m_data.size() > end_idx) && (m_data[end_idx]->m_id == EbmlVoid::ClassInfos.GlobalId))