On Wed, 12 Jan 2011, Bart Van Assche wrote:
>
> Did you realize that with that patch you have broken
> VALGRIND_CHECK_MEM_IS_ADDRESSABLE() and several other macros ?
Ah, I missed that because exim only uses some valgrind macros as
statements not as expressions. Thanks for pointing it out.
I thought the __extension__ macro was supposed to be internal-only because
of the way it is defined in valgrind.h.
There is this code in valgrind.h
#if !defined(__GNUC__)
# define __extension__ /* */
#endif
which is clearly bogus because on non-gcc it leads to syntax errors in
many macros like the following and the ones I broke in memcheck.h
#define RUNNING_ON_VALGRIND __extension__ \
({unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0 /* if not */, \
VG_USERREQ__RUNNING_ON_VALGRIND, \
0, 0, 0, 0, 0); \
_qzz_res; \
})
I'm not immediately sure how to fix it properly.
Tony.
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