10 bytes in 1 blocks are definitely lost in loss record ... of ...
   at 0x........: malloc (vg_replace_malloc.c:...)
   by 0x........: function3 (in ldynsym)
   by 0x........: function2 (in ldynsym)
   by 0x........: function (in ldynsym)
   by 0x........: main (in ldynsym)

