Re: [exim-dev] [Valgrind-users] [Bug 1050] [PATCH] Portabili…

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Autor: Tony Finch
Data:  
A: David Woodhouse
CC: exim-dev, Chris Thompson, valgrind-users, Bart Van Assche, Steen Hammerum
Assumpte: Re: [exim-dev] [Valgrind-users] [Bug 1050] [PATCH] Portability fixes for memcheck.h.
On Wed, 12 Jan 2011, David Woodhouse wrote:
>
> Can we turn the ({ ... }) extension into a static inline function? Or is
> that not sufficiently portable either?


No, nested functions are not allowed in standard C.

It looks to me like the macros were originally written so that the first
argument was supposed to be an lvalue to receive the result, and they were
not supposed to be used in an expression context. To make the
block-expression wrappers work, I think the basic
VALGRIND_DO_CLIENT_REQUEST() macro will have to be changed to return a
result rather than take an lvalue.

Tony.
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