/home/eax/projects/pgscripts/../postgresql/src/backend/access/heap/heaptoast.c: In function ‘heap_compute_data_size_without_attr’:
/home/eax/projects/pgscripts/../postgresql/src/backend/access/heap/heaptoast.c:90:19: warning: ‘tmp’ may be used uninitialized [-Wmaybe-uninitialized]
   90 |         *pvalue = PointerGetDatum(&tmp);
      |                   ^~~~~~~~~~~~~~~~~~~~~
In file included from /home/eax/projects/pgscripts/../postgresql/src/backend/access/heap/heaptoast.c:25:
/home/eax/projects/pgscripts/../postgresql/src/include/postgres.h:735:1: note: by argument 1 of type ‘const void *’ to ‘PointerGetDatum’ declared here
  735 | PointerGetDatum(const void *X)
      | ^~~~~~~~~~~~~~~
/home/eax/projects/pgscripts/../postgresql/src/backend/access/heap/heaptoast.c:85:24: note: ‘tmp’ declared here
   85 |         struct varlena tmp;
      |                        ^~~