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ompi/group: get rid of malloc(0) in ompi_group_intersection(...) #1268

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Jul 22, 2016
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ompi/group: get rid of malloc(0) in ompi_group_intersection(...) #1268

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10 changes: 6 additions & 4 deletions ompi/group/group.c
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@
* Copyright (c) 2012-2013 Inria. All rights reserved.
* Copyright (c) 2013-2015 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2015 Research Organization for Information Science
* Copyright (c) 2015-2016 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
Expand Down Expand Up @@ -453,9 +453,11 @@ int ompi_group_intersection(ompi_group_t* group1,ompi_group_t* group2,

k = 0;
/* allocate the max required memory */
ranks_included = (int *)malloc(group1_pointer->grp_proc_count*(sizeof(int)));
if (NULL == ranks_included) {
return MPI_ERR_NO_MEM;
if (0 < group1_pointer->grp_proc_count) {
ranks_included = (int *)malloc(group1_pointer->grp_proc_count*(sizeof(int)));
if (NULL == ranks_included) {
return MPI_ERR_NO_MEM;
}
}
/* determine the list of included processes for the incl-method */
k = 0;
Expand Down