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do not allocate 0 sized buffers which won't be copied/freed after
[simgrid.git]
/
src
/
smpi
/
smpi_base.c
diff --git
a/src/smpi/smpi_base.c
b/src/smpi/smpi_base.c
index
6ffe7f6
..
f5a2192
100644
(file)
--- a/
src/smpi/smpi_base.c
+++ b/
src/smpi/smpi_base.c
@@
-197,7
+197,7
@@
static MPI_Request build_request(void *buf, int count,
if(datatype->has_subtype == 1){
// This part handles the problem of non-contiguous memory
old_buf = buf;
if(datatype->has_subtype == 1){
// This part handles the problem of non-contiguous memory
old_buf = buf;
- buf = xbt_malloc(count*smpi_datatype_size(datatype));
+ buf =
count==0 ? NULL :
xbt_malloc(count*smpi_datatype_size(datatype));
if (flags & SEND) {
subtype->serialize(old_buf, buf, count, datatype->substruct);
}
if (flags & SEND) {
subtype->serialize(old_buf, buf, count, datatype->substruct);
}