M8-0-1: Exclude compiler generated DeclStmts

These can occur, for example, in range-based for loops.

Author: lcartey

cpp/autosar/src/rules/M8-0-1/MultipleLocalDeclarators.ql

@@ -20,5 +20,7 @@ import codingstandards.cpp.autosar
 from DeclStmt ds
 where
   not isExcluded(ds, InitializationPackage::multipleLocalDeclaratorsQuery()) and
-  count(ds.getADeclaration()) > 1
+  count(Declaration d | d = ds.getADeclaration()) > 1 and
+  // Not a compiler generated `DeclStmt`, such as in the range-based for loop
+  not ds.isCompilerGenerated()
 select ds, "Declaration list contains more than one declaration."

cpp/autosar/test/rules/M8-0-1/test.cpp

@@ -15,3 +15,10 @@ class ClassA {
   int m1, m2; // NON_COMPLIANT
   int m3;     // COMPLIANT
 };
+
+#include <vector>
+void test_loop(std::vector<ClassA> v) {
+  for (const auto b : v) { // COMPLIANT - DeclStmt is compiler generated
+    b;
+  }
+}