located 128+SIGPIPE error gdb output of crash: > Program received signal SIGPIPE, Broken pipe. > 0x00007ffff7b08ae0 in __write_nocancel () from /lib64/libc.so.6 > (gdb) bt > #0 0x00007ffff7b08ae0 in __write_nocancel () from /lib64/libc.so.6 > #1 0x000000000040132a in fork_after_grep (opts=...) at fag.c:190 > #2 0x0000000000400ea2 in main (argc=5, argv=0x7fffffffe128) at fag.c:83