naming.py: Fix FP for constructors/destructors (#2375)

.travis.yml

@@ -140,6 +140,8 @@ matrix:
         - cd addons/test
         - ${CPPCHECK} --dump naming_test.c
         - python3 ../naming.py --var='[a-z].*' --function='[a-z].*' naming_test.c.dump
+        - ${CPPCHECK} --dump naming_test.cpp
+        - python3 ../naming.py --var='[a-z].*' --function='[a-z].*' naming_test.cpp.dump
         - cd ../..
 # check addons/namingng.py
         - cd addons/test

addons/naming.py

@@ -34,9 +34,11 @@ for arg in sys.argv[1:]:
         RE_FUNCTIONNAME = arg[11:]
         validate_regex(RE_FUNCTIONNAME)
 
+
 def reportError(token, severity, msg, errorId):
     cppcheckdata.reportError(token, severity, msg, 'naming', errorId)
 
+
 for arg in sys.argv[1:]:
     if not arg.endswith('.dump'):
         continue
@@ -63,6 +65,9 @@ for arg in sys.argv[1:]:
         if RE_FUNCTIONNAME:
             for scope in cfg.scopes:
                 if scope.type == 'Function':
+                    function = scope.function
+                    if function is not None and function.type in ('Constructor', 'Destructor'):
+                        continue
                     res = re.match(RE_FUNCTIONNAME, scope.className)
                     if not res:
                         reportError(

addons/test/naming_test.cpp

@@ -0,0 +1,9 @@
+// To test:
+// ~/cppcheck/cppcheck --dump naming_test.cpp && python ../naming.py --var='[a-z].*' --function='[a-z].*' naming_test.cpp.dump
+
+// No error for mismatching Constructor/Destructor names should be issued, they can not be changed.
+class TestClass1
+{
+    TestClass1() {}
+    ~TestClass1() {}
+};