Fetch and restore error for Cython locals dict building

Cython/Debugger/libcython.py

@@ -1200,8 +1200,9 @@ class CyExec(CythonCommand, libpython.PyExec):
         expr, input_type = self.readcode(expr)
         executor = libpython.PythonCodeExecutor()
         
-        # get the dict of Cython globals and construct a dict in the inferior
-        # with Cython locals
+        with libpython.FetchAndRestoreError():
+            # get the dict of Cython globals and construct a dict in the 
+            # inferior with Cython locals
             global_dict = gdb.parse_and_eval(
                 '(PyObject *) PyModule_GetDict(__pyx_m)')
             local_dict = gdb.parse_and_eval('(PyObject *) PyDict_New()')
@@ -1209,7 +1210,8 @@ class CyExec(CythonCommand, libpython.PyExec):
             cython_function = self.get_cython_function()
             
             try:
-            self._fill_locals_dict(executor, libpython.pointervalue(local_dict))
+                self._fill_locals_dict(executor, 
+                                       libpython.pointervalue(local_dict))
                 executor.evalcode(expr, input_type, global_dict, local_dict)
             finally:
                 executor.decref(libpython.pointervalue(local_dict))