Fix #14539: false positive: constParameterPointer with type alias (cppcheck-opensource#8310)

Author: ludviggunne

lib/tokenize.cpp

@@ -3013,6 +3013,9 @@ bool Tokenizer::simplifyUsing()
         if (!usingEnd)
             continue;
 
+        for (Token *typeTok = start; typeTok != usingEnd; typeTok = typeTok->next())
+            typeTok->isSimplifiedTypedef(true);
+
         // Move struct defined in using out of using.
         // using T = struct t { }; => struct t { }; using T = struct t;
         // fixme: this doesn't handle attributes

test/testother.cpp

@@ -4789,6 +4789,12 @@ class TestOther : public TestFixture {
               "    return h(s ? s->gnc() : 1);\n"
               "}\n");
         ASSERT_EQUALS("[test.cpp:5:11]: (style) Parameter 's' can be declared as pointer to const [constParameterPointer]\n", errout_str());
+
+        check("using IntPtr = int *;\n"
+              "int* foo(IntPtr bar) {\n"
+              "  return bar = 0;\n"
+              "}\n");
+        ASSERT_EQUALS("", errout_str());
     }
 
     void constArray() {