Bug 129725

Summary:	segfault reading named comments
Product:	[Unmaintained] taglib	Reporter:	Alan Ezust <alan.ezust>
Component:	general	Assignee:	Scott Wheeler <wheeler>
Status:	RESOLVED NOT A BUG
Severity:	normal
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Debian testing
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	testrating.tar.gz

Description Alan Ezust 2006-06-23 23:25:45 UTC

Version:           svn (using KDE KDE 3.5.2)
Installed from:    Debian testing/unstable Packages
Compiler:          gcc version 4.0.4 20060507 (prerelease) (Debian 4.0.3-3) 
OS:                Linux

I'm trying the new named comment tag support in taglib.
I'm attaching a testcase, which when I run, I get a segfault.

gcc version 4.0.4 20060507 (prerelease) (Debian 4.0.3-3)

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1222449472 (LWP 23855)]
0xb7f6c368 in TagLib::ByteVector::operator< () from /usr/lib/libtag.so.1
(gdb) where
#0  0xb7f6c368 in TagLib::ByteVector::operator< () from /usr/lib/libtag.so.1
#1  0xb7f544eb in std::_Rb_tree<TagLib::ByteVector,
std::pair<TagLib::ByteVector const,
TagLib::List<TagLib::ID3v2::Frame*> >,
std::_Select1st<std::pair<TagLib::ByteVector const,
TagLib::List<TagLib::ID3v2::Frame*> > >,
std::less<TagLib::ByteVector>,
std::allocator<std::pair<TagLib::ByteVector const,
TagLib::List<TagLib::ID3v2::Frame*> > > >::lower_bound () from
/usr/lib/libtag.so.1
#2  0xb7f54b22 in TagLib::Map<TagLib::ByteVector,
TagLib::List<TagLib::ID3v2::Frame*> >::operator[] ()
  from /usr/lib/libtag.so.1
#3  0xb7f52e86 in TagLib::ID3v2::Tag::frameList () from /usr/lib/libtag.so.1
#4  0x08049bfc in RatingTagger::findByDescription ()
#5  0x08049dcb in RatingTagger::getPreference ()
#6  0x0804a89f in RatingTagger::getRating ()
#7  0x0804aad9 in RatingTagger::getRating ()
#8  0x0804c3b6 in main ()
(gdb)

Comment 1 Alan Ezust 2006-06-23 23:26:38 UTC

Created attachment 16768 [details]
testrating.tar.gz

testcase for using named comments.

Comment 2 Scott Wheeler 2006-08-31 22:38:07 UTC

You're using a FileRef in a function and then it goes out of scope, thus your tag is deleted.  That's not at all connected to named comments.