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Re: combine.c accesses uninitialized variable :-(

>  > -   x = get_last_value (XEXP (x, 0));
>  > +   x = get_last_value (XEXP (exp, 0));
>  >     if (GET_CODE (x) != COMPARE)
>  >       return UNKNOWN;
Duh, we need to check x for NULL_RTX too.
I've mentioned previously, that this code is not executed on i386 :(
but somehow forgot that I need to test is separately.
I apologize for the problem  I am just checking updated patch and if it
will work, I will install it as obvious to avoid people from having problems
with bootstrap!

Thanks for help with investigating this.
Honza
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