What's the reason about this error: syntax error, unexpected IDENT, expecting ')' ?

[zhaoyuxing18]

I want to trace kernel struct and derenference some elements and I've tried the following： cat test.ply

!/sbin/ply

include <net/sock.h>

kprobe:tcp_set_state { printf("%v %v %v %v\n", pid, comm, str(((struct sock *)arg0)->sk_state), arg1); }

but there's an error:

[wkz]

It would be great if your example worked, alas you are trying to do multiple things that are currently not supported by ply:

• There is no support to parse C code.
• The cast operator is not implemented yet.