StacktraceTop: malloc_consolidate (av=av@entry=0x7fdaacc44740 <main_arena>) at malloc.c:4081 _int_free (av=0x7fdaacc44740 <main_arena>, p=0x7fdaae6faf90, have_lock=0) at malloc.c:3973 _M_dispose (__a=..., this=<optimized out>) at /build/buildd/gcc-4.8-4.8.1/build/x86_64-linux-gnu/libstdc++-v3/include/bits/basic_string.h:249 ~basic_string (this=0x7fdaae6fae80, __in_chrg=<optimized out>) at /build/buildd/gcc-4.8-4.8.1/build/x86_64-linux-gnu/libstdc++-v3/include/bits/basic_string.h:539 ~basic_stringbuf (this=0x7fdaae6fae38, __in_chrg=<optimized out>) at /build/buildd/gcc-4.8-4.8.1/build/x86_64-linux-gnu/libstdc++-v3/include/sstream:64
StacktraceTop: entry=0x7fdaacc 44740 <main_arena>) at malloc.c:4081 buildd/ gcc-4.8- 4.8.1/build/ x86_64- linux-gnu/ libstdc+ +-v3/include/ bits/basic_ string. h:249 fae80, __in_chrg= <optimized out>) at /build/ buildd/ gcc-4.8- 4.8.1/build/ x86_64- linux-gnu/ libstdc+ +-v3/include/ bits/basic_ string. h:539 fae38, __in_chrg= <optimized out>) at /build/ buildd/ gcc-4.8- 4.8.1/build/ x86_64- linux-gnu/ libstdc+ +-v3/include/ sstream: 64
malloc_consolidate (av=av@
_int_free (av=0x7fdaacc44740 <main_arena>, p=0x7fdaae6faf90, have_lock=0) at malloc.c:3973
_M_dispose (__a=..., this=<optimized out>) at /build/
~basic_string (this=0x7fdaae6
~basic_stringbuf (this=0x7fdaae6