Misra: Added rule 18.5

addons/misra-test.c

@@ -180,3 +180,7 @@ void misra_17_6(int x[static 20]) {} // 17.6
 void misra_17_8(int x) {
   x = 3; // 17.8
 }
+
+void misra_18_5() {
+  int *** p;  // 18.5
+}

addons/misra.py

@@ -517,6 +517,22 @@ def misra_17_8(data):
         if var and var.isArgument:
             reportError(token, 17, 8)
 
+def misra_18_5(data):
+    for var in data.variables:
+        if not var.isPointer:
+            continue
+        typetok = var.nameToken
+        count = 0
+        while typetok:
+            if typetok.str == '*':
+                count = count + 1
+            elif not typetok.isName:
+                break
+            typetok = typetok.previous
+        if count > 2:
+            reportError(var.nameToken, 18, 5)
+
+
 if '-verify' in sys.argv[1:]:
     VERIFY = True
 
@@ -579,6 +595,7 @@ for arg in sys.argv[1:]:
             misra_17_1(data.rawTokens)
             misra_17_6(data.rawTokens)
         misra_17_8(cfg)
+        misra_18_5(cfg)
 
     if VERIFY:
         for expected in VERIFY_EXPECTED: