[arm] possible bug in G++ 3.4.x

[Paul Brook]

> [Paul]:
>   Is this problem present also in CSL-3.4.x branch?

That depends which target you are using. It Richard's analysis is correct this 
is an ABI limitation rather than a compiler problem.

The "old" arm-none-elf and arm-linux targets still use SJLJ exceptions. They 
will probably never be "fixed" as this would involve an ABI change.

The newer eabi based arm-none-eabi and arm-linux-gnueabi targets use unwinding 
tables. They should not have this problem.

Paul