Misra: Added 12.3 rule

addons/misra-test.c

@@ -23,6 +23,11 @@ void misra_12_1() {
   a = b << c + d; // 12.1
 }
 
+void misra_12_3() {
+  f((1,2),3); // 12.3
+  for (i=0;i<10;i++,j++){} // 12.3
+}
+
 void misra_13_5() {
   if (x && (y++ < 123)){} // 13.5
 }

addons/misra.py

@@ -118,6 +118,24 @@ def misra_12_1(data):
             reportError(token, 12, 1)
             continue
 
+def misra_12_3(data):
+   for token in data.tokenlist:
+       if token.str != ',':
+           continue
+       if token.astParent and (token.astParent.str in ['(', ',', '{']):
+           if token.astParent.str == ',':
+               if token == token.astParent.astOperand1:
+                   if noParentheses(token, token.astParent):
+                       continue
+               elif token == token.astParent.astOperand2:
+                   if noParentheses(token.astParent, token):
+                       continue
+               else:
+                   continue
+           else:
+               continue
+       reportError(token, 12, 3)
+
 def misra_13_5(data):
     for token in data.tokenlist:
         if token.isLogicalOp and hasSideEffects(token.astOperand2):
@@ -156,6 +174,7 @@ for arg in sys.argv[1:]:
             misra_7_3(data.rawTokens)
             misra_12_1_sizeof(data.rawTokens)
         misra_12_1(cfg)
+        misra_12_3(cfg)
         misra_13_5(cfg)
         misra_14_4(cfg)
         misra_15_1(cfg)