Re: [Proposal] Expose internal MultiXact member count function for efficient monitoring

On 2025-09-15 14:47, Naga Appani wrote:

> With these updates in v9, I believe the patch is now in good shape to
> be marked RFC. I’ll go ahead and update the CommitFest entry.

As shown in the commitfest app, v9 patch fails to build:

   multixactfuncs.c:129:28: error: call to undeclared function
'heap_form_tuple'; ISO C99 and later do not support implicit function
declarations [-Wimplicit-function-declaration]
   129 |                 return
HeapTupleGetDatum(heap_form_tuple(tupdesc, values, nulls));
       |                                          ^
   multixactfuncs.c:129:28: note: did you mean 'brin_form_tuple'?
../../../../src/include/access/brin_tuple.h:96:19: note:
'brin_form_tuple' declared here
    96 | extern BrinTuple *brin_form_tuple(BrinDesc *brdesc, BlockNumber
blkno,
       |                   ^
   multixactfuncs.c:129:28: error: incompatible integer to pointer
conversion passing 'int' to parameter of type 'const HeapTupleData *'
(aka 'const struct HeapTupleData *') [-Wint-conversion]
   129 |                 return
HeapTupleGetDatum(heap_form_tuple(tupdesc, values, nulls));
       |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   ../../../../src/include/funcapi.h:230:40: note: passing argument to
parameter 'tuple' here
   230 | HeapTupleGetDatum(const HeapTupleData *tuple)
       |                                        ^
   2 errors generated.

Could you please update the patch to fix this?


--
Regards,

--
Atsushi Torikoshi
Seconded from NTT DATA Japan Corporation to SRA OSS K.K.