> The lines following that give the backtrace for the sendmsg() call; and > the message "Address 0xad39096 is 86 bytes inside a block of size 32,444 > alloc'd ..." tells you details about the above error: > - where the uninitialized memory was originally allocated (the lines > following the "Address 0xad39096 is 86 bytes inside..." line should give > the exact backtrace to the malloc() call) > - which byte in the memory is uninitialized; in this case it's the 86th > byte.
I think I understand what happens now, I'm using std::vector for storing bytes to be sent over the socket and I guess at some moment std::vector automatically reserves more memory for future needs: ==31513== Address 0xad39096 is 86 bytes inside a block of size 32,444 alloc'd ==31513== at 0x40279EE: operator new(unsigned int) (vg_replace_malloc.c:224) ==31513== by 0x4C72C7C: __gnu_cxx::new_allocator<unsigned char>::allocate(unsigned int, void const*) (new_allocator.h:92) ==31513== by 0x4C72CB7: std::__norm::_Vector_base<unsigned char, std::allocator<unsigned char> >::_M_allocate(unsigned int) (stl_vector.h:144) ==31513== by 0x59B7775: std::__norm::vector<unsigned char, std::allocator<unsigned char> >::_M_fill_insert(__gnu_cxx::__normal_iterator<unsigned char*, std::__norm::vector<unsigned char, std::allocator<unsigned char> > >, unsigned int, unsigned char const&) (vector.tcc:395) ==31513== by 0x59B7943: std::__norm::vector<unsigned char, std::allocator<unsigned char> >::insert(__gnu_cxx::__normal_iterator<unsigned char*, std::__norm::vector<unsigned char, std::allocator<unsigned char> > >, unsigned int, unsigned char const&) (stl_vector.h:792) ==31513== by 0x59B79D6: std::__norm::vector<unsigned char, std::allocator<unsigned char> >::resize(unsigned int, unsigned char) (stl_vector.h:509) ==31513== by 0x59B7AA3: std::__debug::vector<unsigned char, std::allocator<unsigned char> >::resize(unsigned int, unsigned char) (vector:214) ==31513== by 0x59B56DE: ByteBuffer::append(unsigned char const*, unsigned int) (ByteBuffer.cpp:264) Thank you all again for being so much helpful -- Best regards, Pavel ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Valgrind-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/valgrind-users
