Program received signal SIGSEGV, Segmentation fault.
0x00002b3d652911fa in sub_go () at pnggccrd.c:5137
5137    pnggccrd.c: No such file or directory.
        in pnggccrd.c
(gdb) bt
	#0  0x00002b3d652911fa in sub_go () at pnggccrd.c:5137
	Cannot access memory at address 0x13