[mpich-discuss] MPICH 5.0.0 released: a warning (some more warnings)

[jdelia at intec.unl.edu.ar]

  Hi again,

Below some other warnings.

Regards.
Jorge 'D'Elia.
--
  In file included from  
/home/bigpack/mpich-paq/mpich-5.0.0/src/mpl/include/mpl_atomic_c11.h:20,
                   from  
/home/bigpack/mpich-paq/mpich-5.0.0/src/mpl/include/mpl_atomic.h:101,
                   from  
/home/bigpack/mpich-paq/mpich-5.0.0/src/mpl/include/mpl.h:16,
                   from ../src/include/mpiimpl.h:53,
                   from ../src/mpi/attr/attrutil.c:6:
  In function ‘MPL_atomic_release_store_int’,
      inlined from ‘MPID_Attr_alloc’ at ../src/mpi/attr/attrutil.c:48:5,
      inlined from ‘MPIR_Attr_dup_list’ at ../src/mpi/attr/attrutil.c:167:17:
   
/home/bigpack/mpich-paq/mpich-5.0.0/src/mpl/include/mpl_atomic_c11.h:59:5:  
warning: ‘__atomic_store_4’ writing 4 bytes into a region of size 0  
overflows the destination [-Wstringop-overflow=]
     59 |     atomic_store_explicit(&ptr->v, (CAST_TYPE)val,  
memory_order_release);      \
        |     ^~~~~~~~~~~~~~~~~~~~~
   
/home/bigpack/mpich-paq/mpich-5.0.0/src/mpl/include/mpl_atomic_c11.h:93:9:  
note: in expansion of macro ‘MPLI_ATOMIC_DECL_FUNC_COMMON’
     93 |         MPLI_ATOMIC_DECL_FUNC_COMMON(TYPE, NAME,  
ATOMIC_TYPE, CAST_TYPE) \
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   
/home/bigpack/mpich-paq/mpich-5.0.0/src/mpl/include/mpl_atomic_c11.h:99:1:  
note: in expansion of macro ‘MPLI_ATOMIC_DECL_FUNC_VAL’
     99 | MPLI_ATOMIC_DECL_FUNC_VAL(int, int, atomic_int, int)
        | ^~~~~~~~~~~~~~~~~~~~~~~~~
  In function ‘MPIR_Attr_dup_list’:
  cc1: note: destination object is likely at address zero.
...
     CC       src/mpi/coll/barrier/lib_libmpi_la-barrier_inter_bcast.lo
   ../src/mpi/coll/barrier/barrier_intra_k_dissemination.c: In  
function ‘MPIR_Barrier_intra_k_dissemination’:
   ../src/mpi/coll/barrier/barrier_intra_k_dissemination.c:120:9:  
warning: ‘MPIC_Waitall’ accessing 8 bytes in a region of size 0  
[-Wstringop-overflow=]
     120 |         MPIC_Waitall(k - 1, recv_reqs + ((k - 1) *  
((nphases - 1) & 1)), MPI_STATUSES_IGNORE);
         |         
 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   ../src/mpi/coll/barrier/barrier_intra_k_dissemination.c:120:9:  
note: referencing argument 2 of type ‘MPIR_Request *[0]’
   In file included from ../src/include/mpiimpl.h:208,
                    from  
../src/mpi/coll/barrier/barrier_intra_k_dissemination.c:6:
   ../src/include/mpir_coll.h:48:5: note: in a call to function ‘MPIC_Waitall’
      48 | int MPIC_Waitall(int numreq, MPIR_Request * requests[],  
MPI_Status * statuses);
         |     ^~~~~~~~~~~~
     CC       src/mpi/coll/bcast/lib_libmpi_la-bcast_utils.lo

      CC       src/mpid/ch4/src/lib_libmpi_la-ch4_proc.lo
    ../src/mpid/ch4/src/ch4_proc.c: In function ‘MPIDIU_upidhash_add’:
    ../src/mpid/ch4/src/ch4_proc.c:336:5: warning: ‘memcpy’ specified  
bound between 18446744071562067968 and 18446744073709551615 exceeds  
maximum object size 9223372036854775807 [-Wstringop-overflow=]
      336 |     memcpy(t->upid, upid, upid_len);
          |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      CC       src/mpid/ch4/src/lib_libmpi_la-ch4_stream_enqueue.lo
     

  end.
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