[Strigi-devel] Crash due to global object

[Harri P. <po...@kd...>]

Hi!

I did a clean build of the current KDE 4 today and get this crash when 
launching an application (Konqueror in this case):

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1109830432 (LWP 25309)]
0x41cadd90 in __gnu_cxx::__pool<true>::_M_reclaim_block (this=0x41d39ac0,
     __p=0x804ac28 "\016", __bytes=27)
     at /home/porten/gcc/libstdc++-v3/src/mt_allocator.cc:226
226     /home/porten/gcc/libstdc++-v3/src/mt_allocator.cc: No such file or directory.
         in /home/porten/gcc/libstdc++-v3/src/mt_allocator.cc
(gdb) bt
#0  0x41cadd90 in __gnu_cxx::__pool<true>::_M_reclaim_block 
(this=0x41d39ac0,
     __p=0x804ac28 "\016", __bytes=27)
     at /home/porten/gcc/libstdc++-v3/src/mt_allocator.cc:226
#1  0x41cae734 in __gnu_cxx::__mt_alloc<char, __gnu_cxx::__common_pool_policy<true> >::deallocate (this=0xbffffbd7, __p=0x804ac28 "\016", __n=27)
     at /tmp/obj/i686-pc-linux-gnu/libstdc++-v3/include/ext/mt_allocator.h:710
#2  0x41cf5c23 in std::string::_Rep::_M_destroy (this=0x804ac28,
     __a=@0xbffffc0c) at /tmp/obj/i686-pc-linux-gnu/libstdc++-v3/include/bits/basic_string.tcc:371
#3  0x40b46e35 in HelperProgramConfig (this=0x1b) at basic_string.h:207
#4  0x40b47ae8 in __static_initialization_and_destruction_0 (__initialize_p=1,    __priority=65535)
     at /home/porten/svn4/kdesupport/strigi/src/streamanalyzer/endanalyzers/helperendanalyzer.cpp:132
#5  0x40b47b5b in global constructors keyed to _ZN24HelperEndAnalyzerFactory14registerFieldsERN6Strigi13FieldRegisterE ()    at 
/home/porten/svn4/kdesupport/strigi/src/streamanalyzer/endanalyzers/helperendanalyzer.cpp:145
#6  0x40b55f95 in __do_global_ctors_aux ()   from /mnt/extra/kde4/lib/libstreamanalyzer.so.0
#7  0x40b233d5 in _init () from /mnt/extra/kde4/lib/libstreamanalyzer.so.0
#8  0x4000c1ce in _dl_catch_error () from /lib/ld-linux.so.2
#9  0x4000c2ba in _dl_init () from /lib/ld-linux.so.2
#10 0x40000c5d in ?? () from /lib/ld-linux.so.2
(gdb)

In helperanalyzer.h I see

   static const HelperProgramConfig helperconfig;

Not good! At least not in a library. Static, global non-POD objects should 
be avoided at all cost due the problem of the construction/destruction 
order. Consult your favourite C++ book or search engines for ways out.

Harri.