1 files changed, 50 insertions, 0 deletions
diff --git a/clang-tools-extra/test/clang-tidy/mpi-buffer-deref.cpp b/clang-tools-extra/test/clang-tidy/mpi-buffer-deref.cpp
new file mode 100644
index 00000000000..67304d23010
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/mpi-buffer-deref.cpp
@@ -0,0 +1,50 @@
+// RUN: %check_clang_tidy %s mpi-buffer-deref %t -- -- -I %S/Inputs/mpi-type-mismatch
+
+#include "mpimock.h"
+
+void negativeTests() {
+  char *buf;
+  MPI_Send(&buf, 1, MPI_CHAR, 0, 0, MPI_COMM_WORLD);
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: buffer is insufficiently dereferenced: pointer->pointer [mpi-buffer-deref]
+
+  unsigned **buf2;
+  MPI_Send(buf2, 1, MPI_UNSIGNED, 0, 0, MPI_COMM_WORLD);
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: buffer is insufficiently dereferenced: pointer->pointer
+
+  short buf3[1][1];
+  MPI_Send(buf3, 1, MPI_SHORT, 0, 0, MPI_COMM_WORLD);
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: buffer is insufficiently dereferenced: array->array
+
+  long double _Complex *buf4[1];
+  MPI_Send(buf4, 1, MPI_C_LONG_DOUBLE_COMPLEX, 0, 0, MPI_COMM_WORLD);
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: buffer is insufficiently dereferenced: pointer->array
+
+  std::complex<float> *buf5[1][1];
+  MPI_Send(&buf5, 1, MPI_CXX_FLOAT_COMPLEX, 0, 0, MPI_COMM_WORLD);
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: buffer is insufficiently dereferenced: pointer->array->array->pointer
+}
+
+void positiveTests() {
+  char buf;
+  MPI_Send(&buf, 1, MPI_CHAR, 0, 0, MPI_COMM_WORLD);
+
+  unsigned *buf2;
+  MPI_Send(buf2, 1, MPI_UNSIGNED, 0, 0, MPI_COMM_WORLD);
+
+  short buf3[1][1];
+  MPI_Send(buf3[0], 1, MPI_SHORT, 0, 0, MPI_COMM_WORLD);
+
+  long double _Complex *buf4[1];
+  MPI_Send(*buf4, 1, MPI_C_LONG_DOUBLE_COMPLEX, 0, 0, MPI_COMM_WORLD);
+
+  long double _Complex buf5[1];
+  MPI_Send(buf5, 1, MPI_C_LONG_DOUBLE_COMPLEX, 0, 0, MPI_COMM_WORLD);
+
+  std::complex<float> *buf6[1][1];
+  MPI_Send(*buf6[0], 1, MPI_CXX_FLOAT_COMPLEX, 0, 0, MPI_COMM_WORLD);
+
+  // Referencing an array with '&' is valid, as this also points to the
+  // beginning of the array.
+  long double _Complex buf7[1];
+  MPI_Send(&buf7, 1, MPI_C_LONG_DOUBLE_COMPLEX, 0, 0, MPI_COMM_WORLD);
+}