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Subject: [OMPI devel] MPI_Type_create_hindexed_block() segfaults
From: Lisandro Dalcin (dalcinl_at_[hidden])
Date: 2014-04-21 07:56:09


I believe the problem is in the following source code line
(file:ompi_datatype_args.c, line:221):

https://bitbucket.org/ompiteam/ompi-svn-mirror/src/v1.8/ompi/datatype/ompi_datatype_args.c?at=v1.8#cl-221

I think you should just remove that bogus line, and that's all.

[dalcinl_at_kw2060 openmpi]$ cat type_hindexed_block.c
#include <mpi.h>
int main(int argc, char *argv[])
{
  MPI_Aint disps[] = {0};
  MPI_Datatype datatype;
  MPI_Init(&argc, &argv);
  MPI_Type_create_hindexed_block(1, 1, disps, MPI_BYTE, &datatype);
  MPI_Finalize();
  return 0;
}
[dalcinl_at_kw2060 openmpi]$ mpicc type_hindexed_block.c
[dalcinl_at_kw2060 openmpi]$ ./a.out
[kw2060:20304] *** Process received signal ***
[kw2060:20304] Signal: Segmentation fault (11)
[kw2060:20304] Signal code: Address not mapped (1)
[kw2060:20304] Failing at address: 0x6a
[kw2060:20304] [ 0] /lib64/libpthread.so.0[0x327c40f750]
[kw2060:20304] [ 1] /lib64/libc.so.6[0x327bc94126]
[kw2060:20304] [ 2]
/home/devel/mpi/openmpi/1.8.0/lib/libmpi.so.1(ompi_datatype_set_args+0x7f1)[0x7f8f0158b62a]
[kw2060:20304] [ 3]
/home/devel/mpi/openmpi/1.8.0/lib/libmpi.so.1(MPI_Type_create_hindexed_block+0x24d)[0x7f8f015cedc8]
[kw2060:20304] [ 4] ./a.out[0x40080c]
[kw2060:20304] [ 5] /lib64/libc.so.6(__libc_start_main+0xf5)[0x327bc21d65]
[kw2060:20304] [ 6] ./a.out[0x4006f9]
[kw2060:20304] *** End of error message ***
Segmentation fault (core dumped)

-- 
Lisandro Dalcin
---------------
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