Code:
Program received signal SIGSEGV, Segmentation fault.
0x00000034c3470db0 in strcpy () from /lib64/tls/libc.so.6
(gdb) bt
#0 0x00000034c3470db0 in strcpy () from /lib64/tls/libc.so.6
#1 0x00000000004029f3 in breakup (
sourceline=0x504ee0 ".CHECK getsource removal of initial blank lines",
components=
{lbl = 0x7fbffff790 ".CHECK", opc = 0x7fbffff750 "getsource", opr1 = 0xab8aa1e <Address 0xab8aa1e out of bounds>, opr2 = 0x40070d "strcspn", ni = 0x0, xbpe = 0x34c3207d8e}) at breakup.c:128
#2 0x0000000000401ee3 in pass1 () at pass1.c:63
#3 0x0000000000400ed1 in main ()