Hello Team The following std::cout results in termination of the program. std::stringstream string_1, string_2; std::cout<<string_1.str()<< int_1<<" "<<string_2.str()<<std::endl; #0 __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95 #1 0x00007ffff6afb910 in __GI__IO_fwrite (buf=0x7ffff6e698c0 <_IO_stdfile_1_lock>, size=1, count=75, fp=0x7ffff6bac6ac <__lll_lock_wait_private+28>) at iofwrite.c:37 #2 0x00007ffff795db84 in std::basic_ostream<char, std::char_traits<char> >& std::__ostream_insert<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*, long) () from target:/usr/lib/x86_64-linux-gnu/libstdc++.so.6 #0 0x00007ffff6b8c187 in GI_libc_write (fd=1, buf=0x555555b01840, nbytes=172) at ../sysdeps/unix/sysv/linux/write.c:27 #1 0x00007ffff6b071bd in IO_new_file_write (f=0x7ffff6e68760 <_IO_2_1_stdout>, data=0x555555b01840, n=172) at fileops.c:1203 #2 0x00007ffff6b08f51 in new_do_write (to_do=172, data=0x555555b01840 "2020/05/19 15:57:50.000000 230542208 000 ECU1 Para ACOM log debug verbose 8 SomeIpPosixClient TransmitSomeIpMessage : 1028 Instance_id 0x 0x0001 memory buffer length 34\nx00000001 :0x 0x00000001 :0x"..., fp=0x7ffff6e68760 <_IO_2_1_stdout_>) at fileops.c:457 #3 IO_new_do_write (fp=fp@entry=0x7ffff6e68760 <_IO_2_1_stdout>, data=0x555555b01840 "2020/05/19 15:57:50.000000 230542208 000 ECU1 Para ACOM log debug verbose 8 SomeIpPosixClient TransmitSomeIpMessage : 1028 Instance_id 0x 0x0001 memory buffer length 34\nx00000001 :0x 0x00000001 :0x"..., to_do=172) at fileops.c:433 #4 0x00007ffff6b09403 in IO_new_file_overflow (f=0x7ffff6e68760 <_IO_2_1_stdout>, ch=10) at fileops.c:798 #5 0x00007ffff6b0434b in GIIO_putc (c=<optimized out>, fp=0x7ffff6e68760 <_IO_2_1_stdout_>) at putc.c:31 #6 0x00007ffff795d68a in std::ostream::put(char) () from target:/usr/lib/x86_64-linux-gnu/libstdc++.so.6 #7 0x00007ffff795d88f in std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&) () from target:/usr/lib/x86_64-linux-gnu/libstdc++.so.6