[ECOS] Re: Dividing by zero does NOT generate exception

Grant Edwards grant.b.edwards@gmail.com
Fri Mar 4 22:41:00 GMT 2011


On 2011-03-04, Quanren Xiong <xiongqr@gmail.com> wrote:

> I am using ECOS 2.0.33.  To my suprise, the following code does NOT
> generate an exception.
>
> "int b=1; int c=b/0;" The value in variable c will be 0.
>
> The platform is at91rm9200. I double and triple checked the following
> options are on:
>
> CYGSEM_KERNEL_EXCEPTIONS_GLOBAL,
> CYGPKG_HAL_EXCEPTIONS,
> CYGPKG_KERNEL_EXCEPTIONS.
>
> And CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS is disabled.
>
> I would like an exception being generated.

Sorry.

Exceptions are run-time events triggered by code that is executing on
the target.

That snippet _doesn't_generate_any_executable_code_.

> What am I doing wrong?

You're expecting a run-time exception from something that doesn't
actually execute at runtime.

-- 
Grant Edwards               grant.b.edwards        Yow! Kids, don't gross me
                                  at               off ... "Adventures with
                              gmail.com            MENTAL HYGIENE" can be
                                                   carried too FAR!


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