returns after assert(0) inserted

[r1390]

ir/ana/cgana.c

@@ -57,6 +57,7 @@ static entity * get_implementation(type * class, entity * method) {
     }
   }
   assert(0 && "implemenation not found");
+  return NULL;
 }
 
 /* Returns the entity that contains the implementation of the inherited

ir/debug/dbginfo.h

@@ -137,6 +137,7 @@ INLINE static const char* dbg_action_2_str(dbg_action a) {
       return "string conversion not implemented";
     else
       assert(0);
+    return NULL;
   }
 }
 

ir/ir/irnode.c

@@ -2116,6 +2116,7 @@ get_irn_irg(ir_node *node) {
     return node->attr.end.irg;
   } else {
     assert(0 && "no irg attr");
+    return NULL;
   }
 }
 

ir/tr/entity.c

@@ -413,7 +413,9 @@ ir_node *copy_const_value(ir_node *n) {
   case iro_Add:
     nn = new_Add(copy_const_value(get_Add_left(n)), copy_const_value(get_Add_right(n)), m); break;
   default:
-    assert(0 && "opdope invalid or not implemented"); break;
+    assert(0 && "opdope invalid or not implemented");
+    nn=NULL;
+    break;
   }
   return nn;
 }

ir/tr/type.c

@@ -1346,7 +1346,10 @@ entity *get_compound_member(type *tp, int pos)
   else if (is_union_type(tp))
     res = get_union_member(tp, pos);
   else
+  {
     assert(0 && "need struct, union or class to get a member");
+    res=NULL;
+  }
 
   return res;
 }