Initialize the sndbuf in all cases. Do not forget to initialize the

tree used in each of the broadcast functions.

This commit was SVN r12332.

ompi/mca/coll/tuned/coll_tuned_bcast.c

@@ -59,6 +59,7 @@ ompi_coll_tuned_bcast_intra_chain ( void *buff, int count,
 
     /* setup the chain topology. */
     COLL_TUNED_UPDATE_CHAIN( comm, root, chains );
+    chain = comm->c_coll_selected_data->cached_chain;
 
     ompi_ddt_type_size( datatype, &typelng );
 
@@ -243,6 +244,7 @@ ompi_coll_tuned_bcast_intra_split_bintree ( void* buffer,
 
     /* setup the binary tree topology. */
     COLL_TUNED_UPDATE_BINTREE( comm, root );
+    tree = comm->c_coll_selected_data->cached_bintree;
 
     err = ompi_ddt_type_size( datatype, &type_size );
 
@@ -488,6 +490,7 @@ ompi_coll_tuned_bcast_intra_bintree ( void* buffer,
 
     /* setup the tree topology. */
     COLL_TUNED_UPDATE_BINTREE( comm, root );
+    tree = comm->c_coll_selected_data->cached_bintree;
 
     err = ompi_ddt_type_size( datatype, &type_size );
 

ompi/mca/coll/tuned/coll_tuned_reduce.c

@@ -42,7 +42,7 @@ int ompi_coll_tuned_reduce_generic( void* sendbuf, void* recvbuf, int original_c
                                     ompi_coll_tree_t* tree, int count_by_segment )
 {
     char *inbuf[2] = {(char*)NULL, (char*)NULL};
-    char *local_op_buffer, *accumbuf, *sendtmpbuf;
+    char *local_op_buffer, *accumbuf = NULL, *sendtmpbuf;
     ptrdiff_t extent, lower_bound;
     size_t typelng, realsegsize;
     ompi_request_t* reqs[2] = {MPI_REQUEST_NULL, MPI_REQUEST_NULL};