32-bit error in comex/src-mpi3/comex.c

[dl1ycf]

In this file, in function comex_malloc(), there is

int tsize;

if (size > 0) {
  tsize = size;
} else {
  tsize = 8;
}

MPI_Alloc_mem(tsize,MPI_INFO_NULL,&reg_entries[comm_rank].buf);

so "tsize" should be size_t or even better MPI_Aint. With the code as is, I see negative
values for tsize, obviously stemming from 32-bit overflows.

[dl1ycf]

The same probably applies to all "int len" arguments in reg_win.[ch]