$  ./run-stap -ve 'probe process("./stap").mark("pass0__start") { println($s) }' -p2
Pass 1: parsed user script and 65 library script(s) using
83484virt/20204res/2252shr kb, in 100usr/10sys/100real ms.
semantic error: No cfa_ops supplied, but needed by DW_OP_call_frame_cfa:
identifier '$s' at <input>:1:56
        source: probe process("./stap").mark("pass0__start") { println($s) }
                                                                       ^
Pass 2: analyzed script: 1 probe(s), 0 function(s), 0 embed(s), 0 global(s)
using 98296virt/22900res/3516shr kb, in 0usr/0sys/74real ms.
Pass 2: analysis failed.  Try again with another '--vp 01' option.

Compiled with gcc (GCC) 4.4.2 20091222 (Red Hat 4.4.2-20)

The same works fine on i386.