Fix #12198: Expect function pointers in Misra 17.7 check (#5675)

Author: amacgregor-sym

addons/misra.py

@@ -3333,7 +3333,9 @@ def misra_17_7(self, data):
                 continue
             if token.str != '(' or token.astParent:
                 continue
-            if not token.previous.isName or token.previous.varId:
+            if not token.astOperand1 or not token.astOperand1.isName:
+                continue
+            if token.astOperand1.varId and get_function_pointer_type(token.astOperand1.variable.typeStartToken) is None:
                 continue
             if token.valueType is None:
                 continue

addons/test/misra/misra-test.c

@@ -1739,6 +1739,9 @@ static void misra_17_6(int x[static 20]) {(void)x;} // 17.6
 static int calculation(int x) { return x + 1; }
 static void misra_17_7(void) {
   calculation(123); // 17.7
+  int (*calc_ptr)(int) = &calculation;
+  calc_ptr(123); // 17.7
+  int y = calc_ptr(123);
 }
 
 static void misra_17_8(int x) {