add auto to cpp static analysis check

Author: bmcutler

examples/05_cpp_static_analysis/config/config.json

@@ -1,31 +1,44 @@
 {
-  "resource_limits" : {
-    "RLIMIT_CPU" : 60,
-    "RLIMIT_NPROC" : 100,
-    "RLIMIT_AS" : "RLIM_INFINITY"
-  },
+    "resource_limits" : {
+        "RLIMIT_CPU" : 60,
+        "RLIMIT_NPROC" : 100,
+        "RLIMIT_AS" : "RLIM_INFINITY"
+    },
 
-  "testcases" : [
-    {
-      // Static analysis can also be performed upon C++ code.
-      // Here, no compilation is performed at all; instead, student code is examined to
-      // ensure that it does not use the "goto" keyword.
-      "title" : "C++ - Check for goto",
-      "type" : "Compilation",
-      "command" : [ "submitty_count_token -l c goto *.cpp" ],
-      "points" : 10,
-      "validation" : [
+    // Static analysis can also be performed upon C++ code.
+    // Here, no compilation is performed at all; instead, student code is examined to
+    // ensure that it does not use either the "goto" or "auto" keywords.
+    "testcases" : [
         {
-          "method" : "intComparison",
-          "actual_file" : "STDOUT.txt",
-          "description" : "Number of `goto`",
-          "comparison" : "eq",
-          "term" : 0,
-          "failure_message" : "You must not use the `goto` keyword.",
-          "show_message" : "on_failure",
-          "show_actual" : "never"
+            
+            "title" : "Check for goto and auto",
+            "command" : [ "submitty_count_token -l c goto *.cpp",
+                          "submitty_count_token -l c auto *.cpp" ],
+            "points" : 2,
+            "validation" : [
+                {
+                    // number of goto must be 0
+                    "method" : "intComparison",
+                    "actual_file" : "STDOUT_0.txt",
+                    "description" : "Number of `goto`",
+		    "comparison" : "eq",
+                    "term" : 0,
+                    "failure_message" : "You must not use the `goto` keyword.",
+                    "show_message" : "on_failure",
+                    "show_actual" : "never"
+                },
+                {
+                    // number of auto must be 0
+                    "method" : "intComparison",
+                    "actual_file" : "STDOUT_1.txt",
+                    "description" : "Number of `auto`",
+		    "comparison" : "eq",
+                    "term" : 0,
+                    "failure_message" : "You must not use the `auto` keyword.",
+                    "show_message" : "on_failure",
+                    "show_actual" : "never"
+                }
+            ]
         }
-      ]
-    }
-  ]
+    ]
 }

examples/05_cpp_static_analysis/submissions/buggy.cpp

@@ -1,4 +1,5 @@
 int main() {
 foo:
+	auto x = 1;
 	goto foo;
 }