Re: Fix warnings and typo in dshash

On Sun, Sep 3, 2017 at 6:57 PM, Amit Kapila <amit.kapila16@gmail.com> wrote:
> I am seeing below warnings (on Win7) in dshash.c
>
> 1>  dshash.c
> 1>src/backend/lib/dshash.c(318): warning C4334: '<<' : result of
> 32-bit shift implicitly converted to 64 bits (was 64-bit shift
> intended?)
> 1>src/backend/lib/dshash.c(679): warning C4334: '<<' : result of
> 32-bit shift implicitly converted to 64 bits (was 64-bit shift
> intended?)
> 1>src/backend/lib/dshash.c(713): warning C4334: '<<' : result of
> 32-bit shift implicitly converted to 64 bits (was 64-bit shift
> intended?)

Thanks!  That's a handy warning to have.  I see that it is also
visible on the build farm:

https://buildfarm.postgresql.org/cgi-bin/show_stage_log.pl?nm=caecilian&dt=2017-09-02%2019%3A30%3A30&stg=make

Aside from these 3 warnings, it looks like the other 17 are all
"warning C4005: 'HAVE_LONG_LONG_INT_64': macro redefinition".  I
wonder if it would make sense to fix that too and then turn on the
MSVC equivalent of -Werror=xxx on a build farm animal...

> Attached a patch to fix the above warning.

I think it should be (size_t) 1, not UINT64CONST(1).  See attached.

> I have noticed a typo in dshash.h for which a separate patch is attached.

+1

-- 
Thomas Munro
http://www.enterprisedb.com