Re: big issues with state machine loading

On Sat, Feb 8, 2014 at 9:30 AM, Thierry Bultel <[email protected]> wrote:

>  Hi all,
>
> We are currently evaluating orocos toolchain 2.7rc3
> My configuration is :
>
> - boost-1.53.0
> - gcc-4.7.3
>
> The test sample is the helloworld.cpp from the tutorials; here is the
> state machine script:
>
> StateMachine States {
>
>         initial state initState
>         {
>                 entry
>                 {
>                 }
>
>                 transition select Final
>         }
>         final state Final
>         {
>                 entry
>                 {
>                 }
>
> //
>         }
> }
>
> RootMachine  States sTates
>
>
> I am testing on 2 target architectures, the first one is intel and the
> second, arm
> The bug I am mentioning here occur one the real targets, as well as with
> qemu user.
>
> On intel, comments (both "//" and "/* ...*/" )in state machine are
> detected as errors:
>
> Hello [R]> scripting.loadStateMachines("statemachine.osd")
> 6.129 [ Info   ][ScriptingService::loadStateMachine] Parsing file
> statemachine.osd
> 6.247 [ ERROR  ][ScriptingService::loadStateMachine] statemachine.osd
> :Parse error at line 18: Syntactic error: Exptected ending '}' at end of
> state ( or could not find out what this line means ).
>  = false
>
>
> On arm, that directly leads to a SIGSEGV. I do not have a backtrace for
> now, unfortunately.
>
>
> I would like to add that the bug is also reproducible with orocos-1.1x and
> boost-1.35, letting me think
> that this could be due to the compiler version. Our investigations have
> failed to identity the cause,
> and I wanted to try with latest orocos version before posting.
>

I'll add it as a unit test to RTT, then we can easily reproduce it and fix
it. I had heard earlier complaints about commenting in script code not
always working. There is a difference between commenting in function blocks
(like entry { ... }) and outside... so the issue is probably there.

Peter

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