Re: Change GUC hashtable to use simplehash?

I wrote:

> The offending code is not even my preferred way to handle the last
> word of the string (see f4ad0021af), so if the current way is still
> not valgrind-clean, I wonder if we should give up and add an
> exception, since we know any garbage bits are masked off.

That would actually be a maintenance headache because the function is
inlined, but here's a better idea: We already have a fallback path for
when the string is not suitably aligned, or in 32-bit builds. We could
just use that under Valgrind:

 static inline size_t
 fasthash_accum_cstring(fasthash_state *hs, const char *str)
 {
-#if SIZEOF_VOID_P >= 8
+#if SIZEOF_VOID_P >= 8 && !defined(USE_VALGRIND)

Any objections?

-- 
John Naylor
Amazon Web Services