[patch] More gcc 4.2.3 compilation fixes

[Andreas Köhler]

Hi Jerry,

Am Sonntag, den 30.12.2007, 13:36 -0500 schrieb Jerry Quinn:
> After the last fix, I ran into another set of cases of gcc being too 
> smart for its own good.  In this case, we're calling the macro 
> QOF_BOOK_LOOKUP_ENTITY, which checks its args for null pointers. 
> However, several indirect callers such as gncInvoiceLookupFlip() and its 
> siblings are passing the address of a stack variable, which can't be 
> null.  GCC then helpfully warns that this check will always be true, 
> then killing the compile.
> 
> To fix it, I created an alternate QOF_BOOK_LOOKUP_ENTITY_NC that leaves 
> arg checking to the caller and propagated that up to the places that 
> died because of the always true warnings.
> 
> This patch squelches the warnings but I can't help feeling like there 
> should be a cleaner way of solving the problem.
> 
> Opinions welcome,
> Jerry Quinn

---8<--o-->8---

An alternative would be to disable this type of warning completely, like
in the attached patch.  Does it work for you?

-- andi5

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