[Quickfix-developers] UMR in FIX::Dictionary::getDay

[Igor S. <se...@ma...>]

Hi,

Using Purify tool under Linux I catch the following UMR (unrelated data I've 
replaced with "..."):

  <error type="UMR" desc="Uninitialized memory read (9 times)">
This is occurring while in thread 23611
Reading 8 bytes from 0x7fbfffe1c0 on the stack of thread 23611 (7 bytes at 
0x7fbfffe1c1 uninit)
Address 0x7fbfffe1c0 is      488 bytes below frame pointer in function 
_Unwind_RaiseException
    <stack>
      <frame func="*unknown func*" file="pc=0x3f68b0ecee"/>
      <frame func="_Unwind_RaiseException" file="/lib64/libgcc_s.so.1"/>
      <frame func="__cxa_throw" file="/usr/lib64/libstdc++.so.6"/>
      <frame func="FIX::Dictionary::getDay(std::string<char, 
std::char_traits<char>, std::allocator<char>> const&) const" 
file="/.../quickfix/1.12.4/src/src/C++/Dictionary.cpp" line="110"/>
      <frame func="FIX::SessionFactory::create(FIX::SessionID const&, 
FIX::Dictionary const&)" 
file="/.../quickfix/1.12.4/src/src/C++/SessionFactory.cpp" line="103"/>
      ...
      <frame func="__libc_start_main" file="/lib64/tls/libc.so.6"/>
      <frame func="_start" file="/usr/lib64/crt1.o"/>
    </stack>
  </error>

Does anyone know why this is reported and how it can be avoided, if possible 
at all?

The "tricky" point is that I set values for START_TIME/END_TIME and do not 
set anything for START_DAY/END_DAY, in the 'settings' Dicionary passed into 
SessionFactor::create().
If I set START_DAY/END_DAY too, there is no UMR because ConfigError isn't 
thrown in this case.

Any help is very appreciated!

Thanks in advance,
Igor