Standard input is empty

 destruktor 

*** Error in `./prog': munmap_chunk(): invalid pointer: 0x000055d083c9cc28 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x70bcb)[0x2b86eb964bcb]
/lib/x86_64-linux-gnu/libc.so.6(+0x76f96)[0x2b86eb96af96]
./prog(+0x96c)[0x55d0827b096c]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)[0x2b86eb9142b1]
./prog(+0x9ca)[0x55d0827b09ca]
======= Memory map: ========
2b86eac14000-2b86eac37000 r-xp 00000000 fd:00 2840974                    /lib/x86_64-linux-gnu/ld-2.24.so
2b86eac37000-2b86eac3b000 rw-p 00000000 00:00 0 
2b86eac44000-2b86eac49000 rw-p 00000000 00:00 0 
2b86eae37000-2b86eae38000 r--p 00023000 fd:00 2840974                    /lib/x86_64-linux-gnu/ld-2.24.so
2b86eae38000-2b86eae39000 rw-p 00024000 fd:00 2840974                    /lib/x86_64-linux-gnu/ld-2.24.so
2b86eae39000-2b86eae3a000 rw-p 00000000 00:00 0 
2b86eae3a000-2b86eafac000 r-xp 00000000 fd:00 2967755                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
2b86eafac000-2b86eb1ac000 ---p 00172000 fd:00 2967755                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
2b86eb1ac000-2b86eb1b6000 r--p 00172000 fd:00 2967755                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
2b86eb1b6000-2b86eb1b8000 rw-p 0017c000 fd:00 2967755                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
2b86eb1b8000-2b86eb1bc000 rw-p 00000000 00:00 0 
2b86eb1bc000-2b86eb2bf000 r-xp 00000000 fd:00 2841003                    /lib/x86_64-linux-gnu/libm-2.24.so
2b86eb2bf000-2b86eb4be000 ---p 00103000 fd:00 2841003                    /lib/x86_64-linux-gnu/libm-2.24.so
2b86eb4be000-2b86eb4bf000 r--p 00102000 fd:00 2841003                    /lib/x86_64-linux-gnu/libm-2.24.so
2b86eb4bf000-2b86eb4c0000 rw-p 00103000 fd:00 2841003                    /lib/x86_64-linux-gnu/libm-2.24.so
2b86eb4c0000-2b86eb4d6000 r-xp 00000000 fd:00 2840941                    /lib/x86_64-linux-gnu/libgcc_s.so.1
2b86eb4d6000-2b86eb6d5000 ---p 00016000 fd:00 2840941                    /lib/x86_64-linux-gnu/libgcc_s.so.1
2b86eb6d5000-2b86eb6d6000 r--p 00015000 fd:00 2840941                    /lib/x86_64-linux-gnu/libgcc_s.so.1
2b86eb6d6000-2b86eb6d7000 rw-p 00016000 fd:00 2840941                    /lib/x86_64-linux-gnu/libgcc_s.so.1
2b86eb6d7000-2b86eb6ef000 r-xp 00000000 fd:00 2840960                    /lib/x86_64-linux-gnu/libpthread-2.24.so
2b86eb6ef000-2b86eb8ee000 ---p 00018000 fd:00 2840960                    /lib/x86_64-linux-gnu/libpthread-2.24.so
2b86eb8ee000-2b86eb8ef000 r--p 00017000 fd:00 2840960                    /lib/x86_64-linux-gnu/libpthread-2.24.so
2b86eb8ef000-2b86eb8f0000 rw-p 00018000 fd:00 2840960                    /lib/x86_64-linux-gnu/libpthread-2.24.so
2b86eb8f0000-2b86eb8f4000 rw-p 00000000 00:00 0 
2b86eb8f4000-2b86eba89000 r-xp 00000000 fd:00 2841097                    /lib/x86_64-linux-gnu/libc-2.24.so
2b86eba89000-2b86ebc88000 ---p 00195000 fd:00 2841097                    /lib/x86_64-linux-gnu/libc-2.24.so
2b86ebc88000-2b86ebc8c000 r--p 00194000 fd:00 2841097                    /lib/x86_64-linux-gnu/libc-2.24.so
2b86ebc8c000-2b86ebc8e000 rw-p 00198000 fd:00 2841097                    /lib/x86_64-linux-gnu/libc-2.24.so
2b86ebc8e000-2b86ebc92000 rw-p 00000000 00:00 0 
55d0827b0000-55d0827b1000 r-xp 00000000 fd:00 16773124                   /home/eXPCAZ/prog
55d0829b0000-55d0829b1000 r--p 00000000 fd:00 16773124                   /home/eXPCAZ/prog
55d0829b1000-55d0829b2000 rw-p 00001000 fd:00 16773124                   /home/eXPCAZ/prog
55d083c8b000-55d083cbd000 rw-p 00000000 00:00 0                          [heap]
7ffcd7d22000-7ffcd7d43000 rw-p 00000000 00:00 0                          [stack]
7ffcd7dd2000-7ffcd7dd4000 r-xp 00000000 00:00 0                          [vdso]
7ffcd7dd4000-7ffcd7dd6000 r--p 00000000 00:00 0                          [vvar]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]