Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 47832421732752 (LWP 14509)]
0x00002b80d8b7ada0 in sub_go () at pnggccrd.c:5137
5137    pnggccrd.c: No such file or directory.
        in pnggccrd.c
(gdb) bt
#0  0x00002b80d8b7ada0 in sub_go () at pnggccrd.c:5137
Cannot access memory at address 0x11