manual: Document the cwe attribute

lib/checkstl.cpp

@@ -1535,14 +1535,10 @@ void CheckStl::readingEmptyStlContainer()
         if (i->type != Scope::eFunction)
             continue;
 
-        const Token* restartTok = nullptr;
         for (const Token *tok = i->classStart->next(); tok != i->classEnd; tok = tok->next()) {
-            if (Token::Match(tok, "for|while")) { // Loops and end of scope clear the sets.
+            if (Token::Match(tok, "for|while|do|}")) { // Loops and end of scope clear the sets.
-                restartTok = tok->linkAt(1); // Check condition to catch looping over empty containers
-            } else if (tok == restartTok || Token::Match(tok, "do|}")) {
                 empty_map.clear();
                 empty_nonmap.clear();
-                restartTok = nullptr;
             }
 
             if (!tok->varId())

man/manual.docbook

@@ -305,7 +305,7 @@ cppcheck -DA --force file.c</programlisting>
   &lt;cppcheck version="1.66"&gt;
   &lt;errors&gt;
     &lt;error id="someError" severity="error" msg="short error text"
-           verbose="long error text" inconclusive="true"&gt;
+           verbose="long error text" inconclusive="true" cwe="312"&gt;
       &lt;location file="file.c" line="1"/&gt;
     &lt;/error&gt;
   &lt;/errors&gt;
@@ -361,6 +361,15 @@ cppcheck -DA --force file.c</programlisting>
             inconclusive.</para>
           </listitem>
         </varlistentry>
+
+        <varlistentry>
+          <term><sgmltag>cwe</sgmltag></term>
+
+          <listitem>
+            <para>CWE ID for message. This attribute is only used
+	    when the CWE ID for the message is known.</para>
+          </listitem>
+        </varlistentry>
       </variablelist>
     </section>
 

test/teststl.cpp

@@ -2664,13 +2664,6 @@ private:
               "    std::string strValue2 = CMap[1];\n"
               "}\n", true);
         ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Reading from empty STL container\n", errout.str());
-
-        // #4306
-        check("void f(std::vector<int> v) {\n"
-              "    v.clear();\n"
-              "    for(int i = 0; i < v.size(); i++) { cout << v[i]; }\n"
-              "}", true);
-        ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Reading from empty STL container\n", errout.str());
     }
 };