Jörg Hansen created LOGCXX-422:
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Summary: Sporadic crash in CachedDateFormat::millisecondFormat()
Key: LOGCXX-422
URL: https://issues.apache.org/jira/browse/LOGCXX-422
Project: Log4cxx
Issue Type: Bug
Components: Core
Affects Versions: 0.10.1
Environment: Windows 7, Visual C++ 2008 (SP1)
Reporter: Jörg Hansen
Priority: Critical
The method CachedDateFormat::findMillisecondStart() was changed in rev 1559522
for LOG4CXX-420.
Since then I experience sporadic crashes in the method
CachedDateFormat::millisecondFormat(). Further investigation showed that the
specified parameter 'buf' is sometimes undefined, so any try to write
sporadically fails.
I have a debugging session open with the crash at the time of this writing. The
current log message is "Current spot Reichenspergerplatz - EBP at (3,13) of
entry 582" and should be written to a ConsoleAppender. The current conversion
pattern is "%d %p [%c] %m%n". The call stack at the crash is (sorry, german
version of vc2008):
log4cxx.dll!log4cxx::pattern::CachedDateFormat::millisecondFormat(int
millis=147018584,
std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> > &
buf=<Schlechtes Ptr>, int offset=22) Zeile 236 + 0x12 Bytes
log4cxx.dll!log4cxx::pattern::CachedDateFormat::format(std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t>
> & buf="", __int64 now=1390993757666876, log4cxx::helpers::Pool & p={...})
Zeile 189 + 0x21 Bytes
log4cxx.dll!log4cxx::pattern::DatePatternConverter::format(const
log4cxx::helpers::ObjectPtrT<log4cxx::spi::LoggingEvent> & event={...},
std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> > &
toAppendTo="", log4cxx::helpers::Pool & p={...}) Zeile 104 + 0x23 Bytes
log4cxx.dll!log4cxx::PatternLayout::format(std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t>
> & output="", const log4cxx::helpers::ObjectPtrT<log4cxx::spi::LoggingEvent>
& event={...}, log4cxx::helpers::Pool & pool={...}) Zeile 91
log4cxx.dll!log4cxx::WriterAppender::subAppend(const
log4cxx::helpers::ObjectPtrT<log4cxx::spi::LoggingEvent> & event={...},
log4cxx::helpers::Pool & p={...}) Zeile 217
log4cxx.dll!log4cxx::WriterAppender::append(const
log4cxx::helpers::ObjectPtrT<log4cxx::spi::LoggingEvent> & event={...},
log4cxx::helpers::Pool & pool1={...}) Zeile 88 + 0x13 Bytes
log4cxx.dll!log4cxx::AppenderSkeleton::doAppend(const
log4cxx::helpers::ObjectPtrT<log4cxx::spi::LoggingEvent> & event={...},
log4cxx::helpers::Pool & pool1={...}) Zeile 143
log4cxx.dll!log4cxx::helpers::AppenderAttachableImpl::appendLoopOnAppenders(const
log4cxx::helpers::ObjectPtrT<log4cxx::spi::LoggingEvent> & event={...},
log4cxx::helpers::Pool & p={...}) Zeile 69 + 0x29 Bytes
log4cxx.dll!log4cxx::Logger::callAppenders(const
log4cxx::helpers::ObjectPtrT<log4cxx::spi::LoggingEvent> & event={...},
log4cxx::helpers::Pool & p={...}) Zeile 97 + 0x12 Bytes
log4cxx.dll!log4cxx::Logger::forcedLog(const
log4cxx::helpers::ObjectPtrT<log4cxx::Level> & level1={...}, const
std::basic_string<char,std::char_traits<char>,std::allocator<char> > &
message="Current spot Reichenspergerplatz - EBP at (3,13) of entry 582", const
log4cxx::spi::LocationInfo & location={...}) Zeile 129
Translation help:
Zeile = line
Schlechtes Ptr = bad pointer
Please call back if you need further information.
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