Fix #14909 internalAstError with x.size() passed to template parameter (#8716)

Author: chrchr-github

lib/templatesimplifier.cpp

@@ -496,7 +496,7 @@ unsigned int TemplateSimplifier::templateParameters(const Token *tok)
             return 0;
 
         // num/type ..
-        if (!tok->isNumber() && tok->tokType() != Token::eChar && tok->tokType() != Token::eString && !tok->isName() && !tok->isOp())
+        if (!tok->isNumber() && tok->tokType() != Token::eChar && tok->tokType() != Token::eString && !tok->isName() && !tok->isOp() && tok->str() != ".")
             return 0;
         tok = tok->next();
         if (!tok)

test/testtokenize.cpp

@@ -241,6 +241,7 @@ class TestTokenizer : public TestFixture {
         TEST_CASE(vardecl_stl_3);
         TEST_CASE(vardecl_template_1);
         TEST_CASE(vardecl_template_2);
+        TEST_CASE(vardecl_template_3);
         TEST_CASE(vardecl_union);
         TEST_CASE(vardecl_par);     // #2743 - set links if variable type contains parentheses
         TEST_CASE(vardecl_par2);    // #3912 - set correct links
@@ -2394,6 +2395,19 @@ class TestTokenizer : public TestFixture {
         ASSERT_EQUALS(expected, tokenizeAndStringify(code));
     }
 
+    void vardecl_template_3() {
+        const char code[] = "template <class T>\n" // #14909
+                            "void f(T x) {\n"
+                            "    const auto y = h<T, x.size()>;\n"
+                            "}";
+        const char expected[]  = "template < class T >\n"
+                                 "void f ( T x ) {\n"
+                                 "const auto y = h < T , x . size ( ) > ;\n"
+                                 "}";
+        ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        ASSERT_EQUALS("[test.cpp:3:11]: (debug) auto token with no type. [autoNoType]\n", errout_str());
+    }
+
     void vardecl_union() {
         // ticket #1976
         const char code1[] = "class Fred { public: union { int a ; int b ; } ; } ;";