C++: Add FP in dataflow through global variables.

Author: MathiasVP

cpp/ql/test/library-tests/dataflow/dataflow-tests/dataflow-consistency.expected

@@ -6,9 +6,15 @@ uniqueEnclosingCallable
 | test.cpp:1126:33:1129:1 | {...} | Node should have one enclosing callable but has 0. |
 | test.cpp:1127:3:1127:13 | reads_input | Node should have one enclosing callable but has 0. |
 | test.cpp:1128:3:1128:21 | not_does_read_input | Node should have one enclosing callable but has 0. |
+| test.cpp:1158:18:1158:21 | call to sink | Node should have one enclosing callable but has 0. |
+| test.cpp:1158:18:1158:42 | ... , ... | Node should have one enclosing callable but has 0. |
+| test.cpp:1158:23:1158:31 | recursion | Node should have one enclosing callable but has 0. |
+| test.cpp:1158:35:1158:40 | call to source | Node should have one enclosing callable but has 0. |
 uniqueCallEnclosingCallable
 | test.cpp:864:47:864:54 | call to source | Call should have one enclosing callable but has 0. |
 | test.cpp:872:46:872:51 | call to source | Call should have one enclosing callable but has 0. |
+| test.cpp:1158:18:1158:21 | call to sink | Call should have one enclosing callable but has 0. |
+| test.cpp:1158:35:1158:40 | call to source | Call should have one enclosing callable but has 0. |
 uniqueType
 uniqueNodeLocation
 missingLocation

cpp/ql/test/library-tests/dataflow/dataflow-tests/test-source-sink.expected

@@ -327,6 +327,7 @@ irFlow
 | test.cpp:1117:27:1117:34 | call to source | test.cpp:1117:27:1117:34 | call to source |
 | test.cpp:1132:11:1132:16 | call to source | test.cpp:1121:8:1121:8 | x |
 | test.cpp:1138:17:1138:22 | call to source | test.cpp:1140:8:1140:18 | * ... |
+| test.cpp:1158:18:1158:42 | ... , ... | test.cpp:1158:23:1158:31 | recursion |
 | true_upon_entry.cpp:9:11:9:16 | call to source | true_upon_entry.cpp:13:8:13:8 | x |
 | true_upon_entry.cpp:17:11:17:16 | call to source | true_upon_entry.cpp:21:8:21:8 | x |
 | true_upon_entry.cpp:27:9:27:14 | call to source | true_upon_entry.cpp:29:8:29:8 | x |

cpp/ql/test/library-tests/dataflow/dataflow-tests/test.cpp

@@ -1153,4 +1153,6 @@ namespace conflation_regression {
     *p = source(0);
     read_deref_deref(p);
   }
-}
+}
+
+int recursion = (sink(recursion), source()); // $ SPURIOUS: ir