fix #11984: cppcheck --errorlist : regression, no missingInclude (#6943)

Author: ludviggunne

Diff for: lib/cppcheck.cpp

@@ -1707,11 +1707,7 @@ void CppCheck::reportProgress(const std::string &filename, const char stage[], c
 void CppCheck::getErrorMessages(ErrorLogger &errorlogger)
 {
     Settings s;
-    s.severity.enable(Severity::warning);
-    s.severity.enable(Severity::style);
-    s.severity.enable(Severity::portability);
-    s.severity.enable(Severity::performance);
-    s.severity.enable(Severity::information);
+    s.addEnabled("all");
 
     CppCheck cppcheck(errorlogger, true, nullptr);
     cppcheck.purgedConfigurationMessage(emptyString,emptyString);

Diff for: test/testcppcheck.cpp

@@ -82,14 +82,22 @@ class TestCppcheck : public TestFixture {
         // Check for error ids from this class.
         bool foundPurgedConfiguration = false;
         bool foundTooManyConfigs = false;
+        bool foundMissingInclude = false; // #11984
+        bool foundMissingIncludeSystem = false; // #11984
         for (const std::string & it : errorLogger.ids) {
             if (it == "purgedConfiguration")
                 foundPurgedConfiguration = true;
             else if (it == "toomanyconfigs")
                 foundTooManyConfigs = true;
+            else if (it == "missingInclude")
+                foundMissingInclude = true;
+            else if (it == "missingIncludeSystem")
+                foundMissingIncludeSystem = true;
         }
         ASSERT(foundPurgedConfiguration);
         ASSERT(foundTooManyConfigs);
+        ASSERT(foundMissingInclude);
+        ASSERT(foundMissingIncludeSystem);
     }
 
     void checkWithFile() const