BUG: fix calling python api with error set and minor leaks

1 files changed, 25 insertions, 5 deletions

diff --git a/numpy/core/src/multiarray/descriptor.c b/numpy/core/src/multiarray/descriptor.c
index c966440ac..325d4b2ce 100644
--- a/numpy/core/src/multiarray/descriptor.c
+++ b/numpy/core/src/multiarray/descriptor.c
@@ -990,8 +990,11 @@ _convert_from_dict(PyObject *obj, int align)
     }
     n = PyObject_Length(names);
     offsets = Borrowed_PyMapping_GetItemString(obj, "offsets");
+    if (!offsets) {
+        PyErr_Clear();
+    }
     titles = Borrowed_PyMapping_GetItemString(obj, "titles");
-    if (!offsets || !titles) {
+    if (!titles) {
         PyErr_Clear();
     }
 
@@ -1046,6 +1049,8 @@ _convert_from_dict(PyObject *obj, int align)
         tup = PyTuple_New(len);
         descr = PyObject_GetItem(descrs, ind);
         if (!descr) {
+            Py_DECREF(tup);
+            Py_DECREF(ind);
             goto fail;
         }
         if (align) {
@@ -1069,17 +1074,23 @@ _convert_from_dict(PyObject *obj, int align)
             long offset;
             off = PyObject_GetItem(offsets, ind);
             if (!off) {
+                Py_DECREF(tup);
+                Py_DECREF(ind);
                 goto fail;
             }
             offset = PyArray_PyIntAsInt(off);
             if (offset == -1 && PyErr_Occurred()) {
                 Py_DECREF(off);
+                Py_DECREF(tup);
+                Py_DECREF(ind);
                 goto fail;
             }
             Py_DECREF(off);
             if (offset < 0) {
                 PyErr_Format(PyExc_ValueError, "offset %d cannot be negative",
                              (int)offset);
+                Py_DECREF(tup);
+                Py_DECREF(ind);
                 goto fail;
             }
 
@@ -1108,14 +1119,20 @@ _convert_from_dict(PyObject *obj, int align)
             PyTuple_SET_ITEM(tup, 1, PyInt_FromLong(totalsize));
             totalsize += newdescr->elsize;
         }
+        if (ret == NPY_FAIL) {
+            Py_DECREF(ind);
+            Py_DECREF(tup);
+            goto fail;
+        }
         if (len == 3) {
             PyTuple_SET_ITEM(tup, 2, title);
         }
         name = PyObject_GetItem(names, ind);
+        Py_DECREF(ind);
         if (!name) {
+            Py_DECREF(tup);
             goto fail;
         }
-        Py_DECREF(ind);
 #if defined(NPY_PY3K)
         if (!PyUString_Check(name)) {
 #else
@@ -1123,14 +1140,16 @@ _convert_from_dict(PyObject *obj, int align)
 #endif
             PyErr_SetString(PyExc_ValueError,
                     "field names must be strings");
-            ret = NPY_FAIL;
+            Py_DECREF(tup);
+            goto fail;
         }
 
         /* Insert into dictionary */
         if (PyDict_GetItem(fields, name) != NULL) {
             PyErr_SetString(PyExc_ValueError,
                     "name already used as a name or title");
-            ret = NPY_FAIL;
+            Py_DECREF(tup);
+            goto fail;
         }
         PyDict_SetItem(fields, name, tup);
         Py_DECREF(name);
@@ -1143,7 +1162,8 @@ _convert_from_dict(PyObject *obj, int align)
                 if (PyDict_GetItem(fields, title) != NULL) {
                     PyErr_SetString(PyExc_ValueError,
                             "title already used as a name or title.");
-                    ret=NPY_FAIL;
+                    Py_DECREF(tup);
+                    goto fail;
                 }
                 PyDict_SetItem(fields, title, tup);
             }