Created attachment 11809 [details] Tar Archive consisting of Source code (main.cpp) CMAKE file and GDB core file in cmake-build-debug/core Operating System version: Linux pop-os 4.18.0-20-generic #21~18.04.1pop0-Ubuntu SMP Wed May 15 14:41:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux GCC version: gcc version 9.1.0 (GCC) Thread model: POSIX GDB configuration: GNU gdb (Ubuntu 8.2-0ubuntu1~18.04) 8.2 Copyright (C) 2018 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. I am linking Intel's TBB library. Attached Source code, Cmake file and GDB generated core file