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From 28a73eac54fbc7cfebfd3b2231ee607284233a00 Mon Sep 17 00:00:00 2001
From: Florian Weik <fweik@icp.uni-stuttgart.de>
Date: Wed, 10 Jun 2020 10:18:21 +0200
Subject: [PATCH 1/4] fixed ub access to first element of empty vectors
---
include/boost/mpi/collectives/all_reduce.hpp | 2 +-
include/boost/mpi/collectives/all_to_all.hpp | 12 ++++++------
include/boost/mpi/collectives/gatherv.hpp | 8 ++++----
include/boost/mpi/collectives/reduce.hpp | 4 ++--
include/boost/mpi/collectives/scatter.hpp | 2 +-
include/boost/mpi/collectives/scatterv.hpp | 4 ++--
.../mpi/detail/binary_buffer_iprimitive.hpp | 4 ++--
.../mpi/detail/binary_buffer_oprimitive.hpp | 2 +-
.../mpi/detail/mpi_datatype_primitive.hpp | 2 +-
include/boost/mpi/detail/packed_iprimitive.hpp | 4 ++--
include/boost/mpi/detail/packed_oprimitive.hpp | 4 ++--
include/boost/mpi/detail/request_handlers.hpp | 4 ++--
include/boost/mpi/graph_communicator.hpp | 4 ++--
include/boost/mpi/group.hpp | 9 +++++----
include/boost/mpi/nonblocking.hpp | 18 +++++++++---------
src/cartesian_communicator.cpp | 3 ++-
16 files changed, 44 insertions(+), 42 deletions(-)
diff --git a/include/boost/mpi/collectives/all_reduce.hpp b/include/boost/mpi/collectives/all_reduce.hpp
index e6ce93c8..302430ff 100644
--- a/boost/mpi/collectives/all_reduce.hpp
+++ b/boost/mpi/collectives/all_reduce.hpp
@@ -77,7 +77,7 @@ namespace detail {
// implementation in this case.
// it's not clear how/if we can avoid the copy.
std::vector<T> tmp_in( out_values, out_values + n);
- reduce(comm, &(tmp_in[0]), n, out_values, op, 0);
+ reduce(comm, detail::c_data(tmp_in), n, out_values, op, 0);
} else {
reduce(comm, in_values, n, out_values, op, 0);
}
diff --git a/include/boost/mpi/collectives/all_to_all.hpp b/include/boost/mpi/collectives/all_to_all.hpp
index 4f20be73..a0af5ff3 100644
--- a/boost/mpi/collectives/all_to_all.hpp
+++ b/boost/mpi/collectives/all_to_all.hpp
@@ -91,10 +91,10 @@ namespace detail {
// Transmit the actual data
BOOST_MPI_CHECK_RESULT(MPI_Alltoallv,
- (&outgoing[0], &send_sizes[0],
- &send_disps[0], MPI_PACKED,
- &incoming[0], &recv_sizes[0],
- &recv_disps[0], MPI_PACKED,
+ (detail::c_data(outgoing), detail::c_data(send_sizes),
+ detail::c_data(send_disps), MPI_PACKED,
+ detail::c_data(incoming), detail::c_data(recv_sizes),
+ detail::c_data(recv_disps), MPI_PACKED,
comm));
// Deserialize data from the iarchive
@@ -126,7 +126,7 @@ all_to_all(const communicator& comm, const std::vector<T>& in_values,
{
BOOST_ASSERT((int)in_values.size() == comm.size());
out_values.resize(comm.size());
- ::boost::mpi::all_to_all(comm, &in_values[0], &out_values[0]);
+ ::boost::mpi::all_to_all(comm, detail::c_data(in_values), detail::c_data(out_values));
}
template<typename T>
@@ -143,7 +143,7 @@ all_to_all(const communicator& comm, const std::vector<T>& in_values, int n,
{
BOOST_ASSERT((int)in_values.size() == comm.size() * n);
out_values.resize(comm.size() * n);
- ::boost::mpi::all_to_all(comm, &in_values[0], n, &out_values[0]);
+ ::boost::mpi::all_to_all(comm, detail::c_data(in_values), n, detail::c_data(out_values));
}
} } // end namespace boost::mpi
diff --git a/include/boost/mpi/collectives/gatherv.hpp b/include/boost/mpi/collectives/gatherv.hpp
index 6b8d706f..5fae9942 100644
--- a/boost/mpi/collectives/gatherv.hpp
+++ b/boost/mpi/collectives/gatherv.hpp
@@ -87,7 +87,7 @@ gatherv(const communicator& comm, const T* in_values, int in_size,
{
if (comm.rank() == root)
detail::gatherv_impl(comm, in_values, in_size,
- out_values, &sizes[0], &displs[0],
+ out_values, detail::c_data(sizes), detail::c_data(displs),
root, is_mpi_datatype<T>());
else
detail::gatherv_impl(comm, in_values, in_size, root, is_mpi_datatype<T>());
@@ -99,7 +99,7 @@ gatherv(const communicator& comm, const std::vector<T>& in_values,
T* out_values, const std::vector<int>& sizes, const std::vector<int>& displs,
int root)
{
- ::boost::mpi::gatherv(comm, &in_values[0], in_values.size(), out_values, sizes, displs, root);
+ ::boost::mpi::gatherv(comm, detail::c_data(in_values), in_values.size(), out_values, sizes, displs, root);
}
template<typename T>
@@ -113,7 +113,7 @@ template<typename T>
void gatherv(const communicator& comm, const std::vector<T>& in_values, int root)
{
BOOST_ASSERT(comm.rank() != root);
- detail::gatherv_impl(comm, &in_values[0], in_values.size(), root, is_mpi_datatype<T>());
+ detail::gatherv_impl(comm, detail::c_data(in_values), in_values.size(), root, is_mpi_datatype<T>());
}
///////////////////////
@@ -139,7 +139,7 @@ void
gatherv(const communicator& comm, const std::vector<T>& in_values,
T* out_values, const std::vector<int>& sizes, int root)
{
- ::boost::mpi::gatherv(comm, &in_values[0], in_values.size(), out_values, sizes, root);
+ ::boost::mpi::gatherv(comm, detail::c_data(in_values), in_values.size(), out_values, sizes, root);
}
} } // end namespace boost::mpi
diff --git a/include/boost/mpi/collectives/reduce.hpp b/include/boost/mpi/collectives/reduce.hpp
index 3248e324..76a28212 100644
--- a/boost/mpi/collectives/reduce.hpp
+++ b/boost/mpi/collectives/reduce.hpp
@@ -335,7 +335,7 @@ void
reduce(const communicator & comm, std::vector<T> const & in_values, Op op,
int root)
{
- reduce(comm, &in_values.front(), in_values.size(), op, root);
+ reduce(comm, detail::c_data(in_values), in_values.size(), op, root);
}
template<typename T, typename Op>
@@ -344,7 +344,7 @@ reduce(const communicator & comm, std::vector<T> const & in_values,
std::vector<T> & out_values, Op op, int root)
{
if (root == comm.rank()) out_values.resize(in_values.size());
- reduce(comm, &in_values.front(), in_values.size(), &out_values.front(), op,
+ reduce(comm, detail::c_data(in_values), in_values.size(), detail::c_data(out_values), op,
root);
}
diff --git a/include/boost/mpi/collectives/scatter.hpp b/include/boost/mpi/collectives/scatter.hpp
index ae3adcbc..f967060a 100644
--- a/boost/mpi/collectives/scatter.hpp
+++ b/boost/mpi/collectives/scatter.hpp
@@ -188,7 +188,7 @@ void
scatter(const communicator& comm, const std::vector<T>& in_values,
T* out_values, int n, int root)
{
- ::boost::mpi::scatter(comm, &in_values[0], out_values, n, root);
+ ::boost::mpi::scatter(comm, detail::c_data(in_values), out_values, n, root);
}
template<typename T>
diff --git a/include/boost/mpi/collectives/scatterv.hpp b/include/boost/mpi/collectives/scatterv.hpp
index f53f704b..7f2fd129 100644
--- a/boost/mpi/collectives/scatterv.hpp
+++ b/boost/mpi/collectives/scatterv.hpp
@@ -142,7 +142,7 @@ void
scatterv(const communicator& comm, const std::vector<T>& in_values,
const std::vector<int>& sizes, T* out_values, int root)
{
- ::boost::mpi::scatterv(comm, &in_values[0], sizes, out_values, root);
+ ::boost::mpi::scatterv(comm, detail::c_data(in_values), sizes, out_values, root);
}
template<typename T>
@@ -159,7 +159,7 @@ void
scatterv(const communicator& comm, const std::vector<T>& in_values,
T* out_values, int out_size, int root)
{
- ::boost::mpi::scatterv(comm, &in_values[0], out_values, out_size, root);
+ ::boost::mpi::scatterv(comm, detail::c_data(in_values), out_values, out_size, root);
}
} } // end namespace boost::mpi
diff --git a/include/boost/mpi/detail/binary_buffer_iprimitive.hpp b/include/boost/mpi/detail/binary_buffer_iprimitive.hpp
index 388cd44c..087d8529 100644
--- a/boost/mpi/detail/binary_buffer_iprimitive.hpp
+++ b/boost/mpi/detail/binary_buffer_iprimitive.hpp
@@ -41,12 +41,12 @@ class BOOST_MPI_DECL binary_buffer_iprimitive
void* address ()
{
- return &buffer_.front();
+ return detail::c_data(buffer_);
}
void const* address () const
{
- return &buffer_.front();
+ return detail::c_data(buffer_);
}
const std::size_t& size() const
diff --git a/include/boost/mpi/detail/binary_buffer_oprimitive.hpp b/include/boost/mpi/detail/binary_buffer_oprimitive.hpp
index 313097b7..fa0645d7 100644
--- a/boost/mpi/detail/binary_buffer_oprimitive.hpp
+++ b/boost/mpi/detail/binary_buffer_oprimitive.hpp
@@ -40,7 +40,7 @@ class BOOST_MPI_DECL binary_buffer_oprimitive
void const * address() const
{
- return &buffer_.front();
+ return detail::c_data(buffer_);
}
const std::size_t& size() const
diff --git a/include/boost/mpi/detail/mpi_datatype_primitive.hpp b/include/boost/mpi/detail/mpi_datatype_primitive.hpp
index fc05d786..5b3cdf54 100644
--- a/boost/mpi/detail/mpi_datatype_primitive.hpp
+++ b/boost/mpi/detail/mpi_datatype_primitive.hpp
@@ -133,7 +133,7 @@ class mpi_datatype_primitive
template <class T>
static T* get_data(std::vector<T>& v)
{
- return v.empty() ? 0 : &(v[0]);
+ return detail::c_data(v);
}
std::vector<MPI_Aint> addresses;
diff --git a/include/boost/mpi/detail/packed_iprimitive.hpp b/include/boost/mpi/detail/packed_iprimitive.hpp
index 85a4010f..e402a20a 100644
--- a/boost/mpi/detail/packed_iprimitive.hpp
+++ b/boost/mpi/detail/packed_iprimitive.hpp
@@ -39,12 +39,12 @@ class BOOST_MPI_DECL packed_iprimitive
void* address ()
{
- return &buffer_[0];
+ return detail::c_data(buffer_);
}
void const* address () const
{
- return &buffer_[0];
+ return detail::c_data(buffer_);
}
const std::size_t& size() const
diff --git a/include/boost/mpi/detail/packed_oprimitive.hpp b/include/boost/mpi/detail/packed_oprimitive.hpp
index 4ca8e072..c9ce44dc 100644
--- a/boost/mpi/detail/packed_oprimitive.hpp
+++ b/boost/mpi/detail/packed_oprimitive.hpp
@@ -38,7 +38,7 @@ class BOOST_MPI_DECL packed_oprimitive
void const * address() const
{
- return &buffer_[0];
+ return detail::c_data(buffer_);
}
const std::size_t& size() const
@@ -114,7 +114,7 @@ class BOOST_MPI_DECL packed_oprimitive
static buffer_type::value_type* get_data(buffer_type& b)
{
- return b.empty() ? 0 : &(b[0]);
+ return detail::c_data(b);
}
buffer_type& buffer_;
diff --git a/include/boost/mpi/detail/request_handlers.hpp b/include/boost/mpi/detail/request_handlers.hpp
index 50a22ec3..8283918b 100644
--- a/boost/mpi/detail/request_handlers.hpp
+++ b/boost/mpi/detail/request_handlers.hpp
@@ -456,7 +456,7 @@ class request::legacy_dynamic_primitive_array_handler
// Resize our buffer and get ready to receive its data
this->extra::m_values.resize(this->extra::m_count);
BOOST_MPI_CHECK_RESULT(MPI_Irecv,
- (&(this->extra::m_values[0]), this->extra::m_values.size(), get_mpi_datatype<T>(),
+ (detail::c_data(this->extra::m_values), this->extra::m_values.size(), get_mpi_datatype<T>(),
stat.source(), stat.tag(),
MPI_Comm(m_comm), m_requests + 1));
}
@@ -478,7 +478,7 @@ class request::legacy_dynamic_primitive_array_handler
// Resize our buffer and get ready to receive its data
this->extra::m_values.resize(this->extra::m_count);
BOOST_MPI_CHECK_RESULT(MPI_Irecv,
- (&(this->extra::m_values[0]), this->extra::m_values.size(), get_mpi_datatype<T>(),
+ (detail::c_data(this->extra::m_values), this->extra::m_values.size(), get_mpi_datatype<T>(),
stat.source(), stat.tag(),
MPI_Comm(m_comm), m_requests + 1));
} else
diff --git a/include/boost/mpi/graph_communicator.hpp b/include/boost/mpi/graph_communicator.hpp
index d49703eb..5bd1cf28 100644
--- a/boost/mpi/graph_communicator.hpp
+++ b/boost/mpi/graph_communicator.hpp
@@ -235,8 +235,8 @@ graph_communicator::setup_graph(const communicator& comm, const Graph& graph,
BOOST_MPI_CHECK_RESULT(MPI_Graph_create,
((MPI_Comm)comm,
nvertices,
- &indices[0],
- edges.empty()? (int*)0 : &edges[0],
+ detail::c_data(indices),
+ detail::c_data(edges),
reorder,
&newcomm));
this->comm_ptr.reset(new MPI_Comm(newcomm), comm_free());
diff --git a/include/boost/mpi/group.hpp b/include/boost/mpi/group.hpp
index 103b35a1..7be24df1 100644
--- a/boost/mpi/group.hpp
+++ b/boost/mpi/group.hpp
@@ -16,6 +16,7 @@
#define BOOST_MPI_GROUP_HPP
#include <boost/mpi/exception.hpp>
+#include <boost/mpi/detail/antiques.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/optional.hpp>
#include <vector>
@@ -272,9 +273,9 @@ group::translate_ranks(InputIterator first, InputIterator last,
BOOST_MPI_CHECK_RESULT(MPI_Group_translate_ranks,
((MPI_Group)*this,
in_array.size(),
- &in_array[0],
+ detail::c_data(in_array),
(MPI_Group)to_group,
- &out_array[0]));
+ detail::c_data(out_array)));
for (std::vector<int>::size_type i = 0, n = out_array.size(); i < n; ++i)
*out++ = out_array[i];
@@ -300,7 +301,7 @@ group group::include(InputIterator first, InputIterator last)
std::vector<int> ranks(first, last);
MPI_Group result;
BOOST_MPI_CHECK_RESULT(MPI_Group_incl,
- ((MPI_Group)*this, ranks.size(), &ranks[0], &result));
+ ((MPI_Group)*this, ranks.size(), detail::c_data(ranks), &result));
return group(result, /*adopt=*/true);
}
@@ -322,7 +323,7 @@ group group::exclude(InputIterator first, InputIterator last)
std::vector<int> ranks(first, last);
MPI_Group result;
BOOST_MPI_CHECK_RESULT(MPI_Group_excl,
- ((MPI_Group)*this, ranks.size(), &ranks[0], &result));
+ ((MPI_Group)*this, ranks.size(), detail::c_data(ranks), &result));
return group(result, /*adopt=*/true);
}
diff --git a/include/boost/mpi/nonblocking.hpp b/include/boost/mpi/nonblocking.hpp
index fe944be8..5ffd00f7 100644
--- a/boost/mpi/nonblocking.hpp
+++ b/boost/mpi/nonblocking.hpp
@@ -91,7 +91,7 @@ wait_any(ForwardIterator first, ForwardIterator last)
int index;
status stat;
BOOST_MPI_CHECK_RESULT(MPI_Waitany,
- (n, &requests[0], &index, &stat.m_status));
+ (n, detail::c_data(requests), &index, &stat.m_status));
// We don't have a notion of empty requests or status objects,
// so this is an error.
@@ -222,8 +222,8 @@ wait_all(ForwardIterator first, ForwardIterator last, OutputIterator out)
// Let MPI wait until all of these operations completes.
std::vector<MPI_Status> stats(num_outstanding_requests);
BOOST_MPI_CHECK_RESULT(MPI_Waitall,
- (num_outstanding_requests, &requests[0],
- &stats[0]));
+ (num_outstanding_requests, detail::c_data(requests),
+ detail::c_data(stats)));
for (std::vector<MPI_Status>::iterator i = stats.begin();
i != stats.end(); ++i, ++out) {
@@ -289,7 +289,7 @@ wait_all(ForwardIterator first, ForwardIterator last)
// Let MPI wait until all of these operations completes.
BOOST_MPI_CHECK_RESULT(MPI_Waitall,
- (num_outstanding_requests, &requests[0],
+ (num_outstanding_requests, detail::c_data(requests),
MPI_STATUSES_IGNORE));
// Signal completion
@@ -346,7 +346,7 @@ test_all(ForwardIterator first, ForwardIterator last, OutputIterator out)
int flag = 0;
int n = requests.size();
std::vector<MPI_Status> stats(n);
- BOOST_MPI_CHECK_RESULT(MPI_Testall, (n, &requests[0], &flag, &stats[0]));
+ BOOST_MPI_CHECK_RESULT(MPI_Testall, (n, detail::c_data(requests), &flag, detail::c_data(stats)));
if (flag) {
for (int i = 0; i < n; ++i, ++out) {
status stat;
@@ -379,7 +379,7 @@ test_all(ForwardIterator first, ForwardIterator last)
int flag = 0;
int n = requests.size();
BOOST_MPI_CHECK_RESULT(MPI_Testall,
- (n, &requests[0], &flag, MPI_STATUSES_IGNORE));
+ (n, detail::c_data(requests), &flag, MPI_STATUSES_IGNORE));
return flag != 0;
}
@@ -483,8 +483,8 @@ wait_some(BidirectionalIterator first, BidirectionalIterator last,
// Let MPI wait until some of these operations complete.
int num_completed;
BOOST_MPI_CHECK_RESULT(MPI_Waitsome,
- (n, &requests[0], &num_completed, &indices[0],
- &stats[0]));
+ (n, detail::c_data(requests), &num_completed, detail::c_data(indices),
+ detail::c_data(stats)));
// Translate the index-based result of MPI_Waitsome into a
// partitioning on the requests.
@@ -591,7 +591,7 @@ wait_some(BidirectionalIterator first, BidirectionalIterator last)
// Let MPI wait until some of these operations complete.
int num_completed;
BOOST_MPI_CHECK_RESULT(MPI_Waitsome,
- (n, &requests[0], &num_completed, &indices[0],
+ (n, detail::c_data(requests), &num_completed, detail::c_data(indices),
MPI_STATUSES_IGNORE));
// Translate the index-based result of MPI_Waitsome into a
diff --git a/src/cartesian_communicator.cpp b/src/cartesian_communicator.cpp
index a46f0bc2..3b15eb0d 100644
--- a/libs/mpi/src/cartesian_communicator.cpp
+++ b/libs/mpi/src/cartesian_communicator.cpp
@@ -10,12 +10,13 @@
#include <cassert>
#include <boost/mpi/cartesian_communicator.hpp>
+#include <boost/mpi/detail/antiques.hpp>
namespace boost { namespace mpi {
namespace {
template <typename T, typename A>
- T* c_data(std::vector<T,A>& v) { return &(v[0]); }
+ T* c_data(std::vector<T,A>& v) { return c_data(v); }
}
std::ostream&
From 5a8e9efe89ba00e32713fd777a82bc8f30a0900d Mon Sep 17 00:00:00 2001
From: Florian Weik <fweik@icp.uni-stuttgart.de>
Date: Wed, 10 Jun 2020 11:04:23 +0200
Subject: [PATCH 2/4] added test with empty vector
---
test/block_nonblock_test.cpp | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/test/block_nonblock_test.cpp b/test/block_nonblock_test.cpp
index 3088b655..2ec02256 100644
--- a/libs/mpi/test/block_nonblock_test.cpp
+++ b/libs/mpi/test/block_nonblock_test.cpp
@@ -82,7 +82,12 @@ BOOST_AUTO_TEST_CASE(non_blocking)
fmt << "S" << i;
strings[i] = fmt.str();
}
-
+
+ std::vector<int> empty;
+
+ BOOST_CHECK(test(world, empty, false, true));
+ BOOST_CHECK(test(world, empty, false, false));
+
BOOST_CHECK(test(world, integers, true, true));
BOOST_CHECK(test(world, integers, true, false));
BOOST_CHECK(test(world, strings, true, true));
From 5e8edd184cb0d5af842392eb58dd797a23241615 Mon Sep 17 00:00:00 2001
From: Florian Weik <fweik@icp.uni-stuttgart.de>
Date: Thu, 11 Jun 2020 14:59:45 +0200
Subject: [PATCH 4/4] fixed cartesian communicator
---
src/cartesian_communicator.cpp | 17 ++++++-----------
1 file changed, 6 insertions(+), 11 deletions(-)
diff --git a/src/cartesian_communicator.cpp b/src/cartesian_communicator.cpp
index 3b15eb0d..946d41fd 100644
--- a/libs/mpi/src/cartesian_communicator.cpp
+++ b/libs/mpi/src/cartesian_communicator.cpp
@@ -14,11 +14,6 @@
namespace boost { namespace mpi {
-namespace {
- template <typename T, typename A>
- T* c_data(std::vector<T,A>& v) { return c_data(v); }
-}
-
std::ostream&
operator<<(std::ostream& out, cartesian_dimension const& d) {
out << '(' << d.size << ',';
@@ -64,7 +59,7 @@ cartesian_communicator::cartesian_communicator(const communicator& comm,
MPI_Comm newcomm;
BOOST_MPI_CHECK_RESULT(MPI_Cart_create,
((MPI_Comm)comm, dims.size(),
- c_data(dims), c_data(periodic),
+ detail::c_data(dims), detail::c_data(periodic),
int(reorder), &newcomm));
if(newcomm != MPI_COMM_NULL) {
comm_ptr.reset(new MPI_Comm(newcomm), comm_free());
@@ -86,7 +81,7 @@ cartesian_communicator::cartesian_communicator(const cartesian_communicator& com
MPI_Comm newcomm;
BOOST_MPI_CHECK_RESULT(MPI_Cart_sub,
- ((MPI_Comm)comm, c_data(bitset), &newcomm));
+ ((MPI_Comm)comm, detail::c_data(bitset), &newcomm));
if(newcomm != MPI_COMM_NULL) {
comm_ptr.reset(new MPI_Comm(newcomm), comm_free());
}
@@ -105,7 +100,7 @@ cartesian_communicator::rank(const std::vector<int>& coords ) const {
int r = -1;
assert(int(coords.size()) == ndims());
BOOST_MPI_CHECK_RESULT(MPI_Cart_rank,
- (MPI_Comm(*this), c_data(const_cast<std::vector<int>&>(coords)),
+ (MPI_Comm(*this), detail::c_data(const_cast<std::vector<int>&>(coords)),
&r));
return r;
}
@@ -123,7 +118,7 @@ std::vector<int>
cartesian_communicator::coordinates(int rk) const {
std::vector<int> cbuf(ndims());
BOOST_MPI_CHECK_RESULT(MPI_Cart_coords,
- (MPI_Comm(*this), rk, cbuf.size(), c_data(cbuf) ));
+ (MPI_Comm(*this), rk, cbuf.size(), detail::c_data(cbuf) ));
return cbuf;
}
@@ -136,7 +131,7 @@ cartesian_communicator::topology( cartesian_topology& topo,
std::vector<int> cdims(ndims);
std::vector<int> cperiods(ndims);
BOOST_MPI_CHECK_RESULT(MPI_Cart_get,
- (MPI_Comm(*this), ndims, c_data(cdims), c_data(cperiods), c_data(coords)));
+ (MPI_Comm(*this), ndims, detail::c_data(cdims), detail::c_data(cperiods), detail::c_data(coords)));
cartesian_topology res(cdims.begin(), cperiods.begin(), ndims);
topo.swap(res);
}
@@ -173,7 +168,7 @@ cartesian_dimensions(int sz, std::vector<int>& dims) {
int leftover = sz % min;
BOOST_MPI_CHECK_RESULT(MPI_Dims_create,
- (sz-leftover, dims.size(), c_data(dims)));
+ (sz-leftover, dims.size(), detail::c_data(dims)));
return dims;
}
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