fix return type

scripts/errors/coll/ParamMatchingType.py

@@ -74,7 +74,7 @@ def get_global_missmatch(type_1, type_2, count_1, count_2, func_to_use, comm):
 
         tm.insert_instruction(c, after_instruction=call)
 
-    yield tm
+    return tm
 
 
 def get_correct_case(type_1, count_1, func_to_use, comm):
@@ -115,7 +115,7 @@ def get_correct_case(type_1, count_1, func_to_use, comm):
 
         tm.insert_instruction(c, after_instruction=call)
 
-    yield tm
+    return tm
 
 
 def is_combination_compatible(t1, t2, f):
@@ -187,4 +187,4 @@ class InvalidComErrorColl(ErrorGenerator):
 
             if type_1 not in correct_types_checked:
                 correct_types_checked.add(type_1)
-                yield get_correct_case(type_1, func_to_use, comm)
+                yield get_correct_case(type_1, 1,func_to_use, comm)

scripts/errors/dtypes/DtypeMissmatch.py

@@ -157,6 +157,8 @@ class DtypeMissmatch(ErrorGenerator):
                                                         datatype=t.lower(),
                                                         communicator=c)]
 
+        #TODO send type A and recv Type B vs send Type B and recv Type A may lead to unnecessary duplicates
+
         # all possible combinations
         combinations_to_use = [(s, r) for s in important_sends for r in important_recvs if
                                is_combination_compatible(s, r)]