On Wed, Apr 5, 2017 at 2:54 AM, Tom Lane <t...@sss.pgh.pa.us> wrote: > Michael Paquier <michael.paqu...@gmail.com> writes: >> In builds where USE_ASSERT_CHECKING is not enabled, costsize.c can >> generate warnings. Here is for example with MSVC: >> src/backend/optimizer/path/costsize.c(4520): warning C4101: 'rte' : >> unreferenced local variable [C:\Users\ioltas\git\postgres\postgres.vcxproj] >> src/backend/optimizer/path/costsize.c(4640): warning C4101: 'rte' : >> unreferenced local variable [C:\Users\ioltas\git\postgres\postgres.vcxproj] > >> a9c074ba7 has done an effort, but a bit more is needed as the attached. > > That doesn't look right at all: > > +#ifdef USE_ASSERT_CHECKING > RangeTblEntry *rte PG_USED_FOR_ASSERTS_ONLY; > +#endif > > The entire point of the PG_USED_FOR_ASSERTS_ONLY annotation is to suppress > this type of warning without a need for an explicit #ifdef like that one. > > We should either fix PG_USED_FOR_ASSERTS_ONLY to work on MSVC as well, > or decide that we don't care about suppressing such warnings on MSVC, > or give up on PG_USED_FOR_ASSERTS_ONLY and remove it everywhere in > favor of plain #ifdefs.
Visual does not have any equivalent of __attribute__((unused))... And visual does not have an equivalent after looking around. A trick that I can think of would be to change PG_USED_FOR_ASSERTS_ONLY to be roughly a macro like that: #if defined(__GNUC__) #define PG_ASSERT_ONLY(x) ASSERT_ONLY_ ## x __attribute__((unused)) #else #define PG_ASSERT_ONLY(x) ((void) x) #endif But that's ugly... > (I'm personally not that much in love with PG_USED_FOR_ASSERTS_ONLY, > because it tends to confuse pgindent.) I would be incline to just do that, any other solution I can think of is uglier than that. -- Michael -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers