Fixed #3152 (Tokenizer: template constructor is removed)

lib/tokenize.cpp

@@ -2624,6 +2624,13 @@ static void removeTemplates(Token *tok)
                 tok->str(";");
                 break;
             }
+            // don't remove constructor
+            if (tok2->str() == "explicit")
+            {
+                Token::eraseTokens(tok, tok2);
+                tok->str(";");
+                break;
+            }
             if (tok2->str() == "(") {
                 tok2 = tok2->link();
                 if (!tok2)

test/testsimplifytokens.cpp

@@ -120,6 +120,7 @@ private:
         TEST_CASE(template_default_parameter);
         TEST_CASE(template_default_type);
         TEST_CASE(template_typename);
+        TEST_CASE(template_constructor);    // #3152 - template constructor is removed
 
         TEST_CASE(namespaces);
 
@@ -2255,6 +2256,15 @@ private:
         }
     }
 
+    void template_constructor() {
+        // #3152 - if template constructor is removed then there might be
+        //         "no constructor" false positives
+        const char code[] = "class Fred {\n"
+                            "    template<class T> explicit Fred(T t) { }\n"
+                            "}";
+        ASSERT_EQUALS("class Fred { ; explicit Fred ( T t ) { } }", tok(code));
+    }
+
     void namespaces() {
         {
             const char code[] = "using namespace std; namespace a{ namespace b{ void f(){} } }";