Drop a few warnings and default definitions from the test suite

tests/stl/oracle/stl_functional.res.oracle

@@ -5,8 +5,6 @@ Now output intermediate result
 [kernel] Warning: Assuming declared function exception::Dtor can't throw any exception
 [kernel] Warning: Assuming declared function exception::Ctor can't throw any exception
 [kernel] Warning: Assuming declared function exception::Dtor can't throw any exception
-[kernel] Warning: Assuming declared function forward<std::minus<int>> can't throw any exception
-[kernel] Warning: Assuming declared function forward<std::plus<int>> can't throw any exception
 /* Generated by Frama-C */
 struct _frama_c_vmt_content {
    void (*method_ptr)() ;
@@ -278,11 +276,17 @@ int *forward<int>(type *t)
 
 /*@ requires \valid(t);
     ensures \valid(\result); */
-struct minus<int> *forward<std::minus<int>>(type *t);
+struct minus<int> *forward<std::minus<int>>(type *t)
+{
+  return t;
+}
 
 /*@ requires \valid(t);
     ensures \valid(\result); */
-struct plus<int> *forward<std::plus<int>>(type *t);
+struct plus<int> *forward<std::plus<int>>(type *t)
+{
+  return t;
+}
 
 /*@ requires \valid(t);
     ensures \valid_read(\result); */

tests/stl/oracle/stl_memory.res.oracle

@@ -11,9 +11,6 @@ Now output intermediate result
 [kernel] Warning: Assuming declared function free can't throw any exception
 [kernel] Warning: Assuming declared function free can't throw any exception
 [kernel] Warning: Assuming declared function free can't throw any exception
-[kernel] Warning: Assuming declared function swap<std::default_delete<int>> can't throw any exception
-[kernel] Warning: Assuming declared function forward<std::default_delete<int[]>> can't throw any exception
-[kernel] Warning: Assuming declared function forward<std::default_delete<int[]>> can't throw any exception
 [kernel] Warning: Assuming declared function exception::Ctor can't throw any exception
 [kernel] Warning: Assuming declared function exception::Dtor can't throw any exception
 [kernel] Warning: Assuming declared function malloc can't throw any exception
@@ -21,8 +18,6 @@ Now output intermediate result
 [kernel] Warning: Assuming declared function malloc can't throw any exception
 [kernel] Warning: Assuming declared function malloc can't throw any exception
 [kernel] Warning: Assuming declared function malloc can't throw any exception
-[kernel] Warning: Assuming declared function forward<std::unique_ptr<int[],std::default_delete<int[]>>> can't throw any exception
-[kernel] Warning: Assuming declared function forward<std::unique_ptr<int[],std::default_delete<int[]>>> can't throw any exception
 /* Generated by Frama-C */
 struct _frama_c_vmt_content {
    void (*method_ptr)() ;
@@ -290,19 +285,40 @@ void swap<int*>(int **a, int **b)
   return;
 }
 
+struct default_delete<int> *operator=(struct default_delete<int> *this,
+                                      struct default_delete<int> const *__frama_c_arg_0);
+
+void default_delete<int>::Ctor(struct default_delete<int> const *this,
+                               struct default_delete<int> const *__frama_c_arg_0);
+
 /*@ requires \valid(b);
     requires \valid(a); */
 void swap<std::default_delete<int>>(struct default_delete<int> *a,
-                                    struct default_delete<int> *b);
+                                    struct default_delete<int> *b)
+{
+  struct default_delete<int> *tmp_0;
+  struct default_delete<int> *tmp_1;
+  struct default_delete<int> tmp;
+  default_delete<int>::Ctor(& tmp,(struct default_delete<int> const *)a);
+  tmp_0 = operator=(a,(struct default_delete<int> const *)b);
+  tmp_1 = operator=(b,(struct default_delete<int> const *)(& tmp));
+  return;
+}
 
 /*@ requires \valid(t);
     ensures \valid(\result); */
 struct unique_ptr<int[],std::default_delete<int[]>> *forward<std::unique_ptr<int[],std::default_delete<int[]>>>
-(type *t);
+(type *t)
+{
+  return t;
+}
 
 /*@ requires \valid(t);
     ensures \valid(\result); */
-struct default_delete<int[]> *forward<std::default_delete<int[]>>(type *t);
+struct default_delete<int[]> *forward<std::default_delete<int[]>>(type *t)
+{
+  return t;
+}
 
 void piecewise_construct_t::Ctor(struct piecewise_construct_t const *this);
 
@@ -1697,12 +1713,6 @@ struct _frama_c_rtti_name_info_node _frama_c_rtti_name_info =
    .pvmt = (struct _frama_c_vmt *)0};
 void default_delete<int>::Ctor(struct default_delete<int> const *this);
 
-void default_delete<int>::Ctor(struct default_delete<int> const *this,
-                               struct default_delete<int> const *__frama_c_arg_0);
-
-struct default_delete<int> *operator=(struct default_delete<int> *this,
-                                      struct default_delete<int> const *__frama_c_arg_0);
-
 void default_delete<int>::Dtor(struct default_delete<int> const *this);
 
 struct _frama_c_rtti_name_info_node _frama_c_rtti_name_info;

tests/stl/oracle/stl_utility.res.oracle

 [kernel] Parsing tests/stl/stl_utility.cpp (external front-end)
 Now output intermediate result
-[kernel] Warning: Assuming declared function operator><S> can't throw any exception
 /* Generated by Frama-C */
 struct _frama_c_vmt_content {
    void (*method_ptr)() ;
@@ -622,9 +621,16 @@ struct _frama_c_rtti_name_info_node _frama_c_rtti_name_info =
    .base_classes = (struct _frama_c_rtti_name_info_content *)0,
    .number_of_base_classes = 0,
    .pvmt = (struct _frama_c_vmt *)0};
+_Bool operator<(struct S const *x, struct S const *y);
+
 /*@ requires \valid_read(y);
     requires \valid_read(x); */
-_Bool operator><S>(struct S const *x, struct S const *y);
+_Bool operator><S>(struct S const *x, struct S const *y)
+{
+  _Bool tmp;
+  tmp = operator<(y,x);
+  return tmp;
+}
 
 /*@ requires \valid(b);
     requires \valid(a); */