Re: [Dotgnu-libjit] How Do I Debug a Memory Protection Error?

[Noah Lavine]

Thank you!

Noah

On Tue, Oct 19, 2010 at 1:47 PM, Klaus Treichel <address@hidden> wrote:
> Hi Noah,
>
>> Hello,
>>
>> I have found the following test case, which is a 63-line program which
>> gives a bus error on my machine.
>>
>> As expected, GDB shows a kernel protection failure at address
>> 0x00000001001004e0, which also happens to be the value of the
>> "function" variable, and in register 11.
>>
>> Here is the test program.
>>
> [snip]
>>   {
>>     enum jit_return_t retval;
>>     int argvals[] = {3, 4, 5};
>>     void *args[] = {&(argvals[0]), &(argvals[1]), &(argvals[2])};
>>
>>     jit_apply(signature, function, args, 3, &retval);
>
> Use jit_function_apply(function, args, &retval);
>  or jit_function_apply_vararg(function, signature, args, &retval);
> instead.
>
> The function jit_apply doesn't take the function but the function's
> entrypoint as argument 2.
>
> Cheers,
> Klaus
>