Fix for crash when PyArray_MapIterSwapAxes is called

Set up default iteraxes array values in call to MapIterBind().

1 files changed, 10 insertions, 0 deletions

diff --git a/numpy/core/src/multiarray/mapping.c b/numpy/core/src/multiarray/mapping.c
index 5f2a7f7a4..5a047ee88 100644
--- a/numpy/core/src/multiarray/mapping.c
+++ b/numpy/core/src/multiarray/mapping.c
@@ -1793,6 +1793,16 @@ PyArray_MapIterBind(PyArrayMapIterObject *mit, PyArrayObject *arr)
         goto fail;
     }
 
+    /* Set up default iteraxes array values */
+    n = PyArray_NDIM(arr);
+    for (i = 0; i < n; i++) {
+        mit->iteraxes[i] = i;
+    }
+    /* no subspace iteration needed.  Finish up and Return */
+    if (subnd == 0) {
+        goto finish;
+    }
+
     /*
      * all indexing arrays have been converted to 0
      * therefore we can extract the subspace with a simple