nepomukindexer dumps core in icalparser indexing calendar message

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I'm running Ubuntu 11.10
kde-runtime: Installed: 4:4.7.2-0ubuntu1

I'm running `nepomukserver --nofork` from my home directory after telling Strigi to index my Windows NTFS drive. Strigi seems to be working fine.

I noticed a core file in my home directory, `file core` reports
core:ELF 64-bit LSB core file x86-64, version 1 (SYSV), SVR4-style, from '/usr/bin/nepomukindexer /mnt/WindowsXPdrive/Documents and Settings/S Page/My Do'
This is a truncated command line, the actual argv[1] is to an IMAP mail message from Microsoft Exchange circa 2005 that does contain a meeting.ics calendar attachment. It is attached

I can reproduce the crash at will using nepomukindexer or xmlindexer, with xmlindexer the stack frame is the same down to frame 10 (libstreamanalyzer). Maybe this bug is against libical0 ?

The output from gdb follows.

Reading symbols from /usr/lib/debug/usr/bin/nepomukindexer...done.
done.
[New LWP 11316]

warning: Can't read pathname for load map: Input/output error.
[Thread debugging using libthread_db enabled]
bt
Core was generated by `/usr/bin/nepomukindexer /mnt/WindowsXPdrive/Documents and Settings/S Page/My Do'.
Program terminated with signal 11, Segmentation fault.
#0 __strchr_sse2 () at ../sysdeps/x86_64/multiarch/../strchr.S:48
48 ../sysdeps/x86_64/multiarch/../strchr.S: No such file or directory.
        in ../sysdeps/x86_64/multiarch/../strchr.S
(gdb) bt
#0 __strchr_sse2 () at ../sysdeps/x86_64/multiarch/../strchr.S:48
#1 0x00007f80c818bb80 in icalparser_string_line_generator () from /usr/lib/libical.so.0
#2 0x00007f80c818c030 in icalparser_get_line () from /usr/lib/libical.so.0
#3 0x00007f80c818cd1b in icalparser_parse () from /usr/lib/libical.so.0
#4 0x00007f80c818cec0 in icalparser_parse_string () from /usr/lib/libical.so.0
#5 0x00007f80c84031c6 in KCalCore::ICalFormat::fromRawString(QSharedPointer<KCalCore::Calendar> const&, QByteArray const&, bool, QString const&) () from /usr/lib/libkcalcore.so.4
#6 0x00007f80c867b4ae in IcsEndAnalyzer::analyze(Strigi::AnalysisResult&, Strigi::StreamBase<char>*) () from /usr/lib/strigi/strigiea_ics.so
#7 0x00007f80d4bc232a in ?? () from /usr/lib/libstreamanalyzer.so.0
#8 0x00007f80d4ba05f9 in Strigi::AnalysisResult::indexChild(std::string const&, long, Strigi::StreamBase<char>*) () from /usr/lib/libstreamanalyzer.so.0
#9 0x00007f80d4bd4c6f in ?? () from /usr/lib/libstreamanalyzer.so.0
#10 0x00007f80d4bc232a in ?? () from /usr/lib/libstreamanalyzer.so.0
#11 0x0000000000406c62 in Nepomuk::Indexer::indexFile (this=<optimized out>,
    info=<optimized out>, resUri=<optimized out>, mtime=0)
    at ../../../../../nepomuk/services/strigi/indexer/indexer.cpp:133
#12 0x0000000000406e8b in Nepomuk::Indexer::indexFile (this=0x7fff40db6600, url=...,
    resUri=<optimized out>, mtime=0)
    at ../../../../../nepomuk/services/strigi/indexer/indexer.cpp:104
#13 0x0000000000406176 in main (argc=2, argv=0x7fff40db6aa8)
    at ../../../../../nepomuk/services/strigi/indexer/main.cpp:82

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From the stack trace, the bug might instead/also be in
   libical.so.0 from package libical0
, or
  strigiea_ics.so from package kdepim-strigi-plugins

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Good news: I can't reproduce the crash after an upgrade to Kubuntu 12.04 alpha2, currently running libstreamanalyzer0 package version 0.7.7-1ubuntu3.