C++: Support more "noreturn" attributes in DefaultOptions

Author: jketema

cpp/ql/lib/DefaultOptions.qll

@@ -54,11 +54,11 @@ class Options extends string {
    *
    * By default, this holds for `exit`, `_exit`, `_Exit`, `abort`,
    * `__assert_fail`, `longjmp`, `__builtin_unreachable` and any
-   * function with a `noreturn` or `__noreturn__` attribute or
-   * `noreturn` specifier.
+   * function with a `noreturn`, `__noreturn__`, `_Noreturn`, or
+   * `_noreturn` attribute or `noreturn` specifier.
    */
   predicate exits(Function f) {
-    f.getAnAttribute().hasName(["noreturn", "__noreturn__"])
+    f.getAnAttribute().hasName(["noreturn", "__noreturn__", "_Noreturn", "_noreturn"])
     or
     f.getASpecifier().hasName("noreturn")
     or

cpp/ql/test/query-tests/jsf/4.13 Functions/AV Rule 114/AV Rule 114.expected

@@ -3,9 +3,6 @@
 | test.c:8:5:8:14 | declaration | Function f2 should return a value of type int but does not return a value here |
 | test.c:25:9:25:14 | ExprStmt | Function f4 should return a value of type int but does not return a value here |
 | test.c:39:9:39:14 | ExprStmt | Function f6 should return a value of type int but does not return a value here |
-| test.c:117:5:117:10 | ExprStmt | Function f19 should return a value of type int but does not return a value here |
-| test.c:123:5:123:10 | ExprStmt | Function f21 should return a value of type int but does not return a value here |
-| test.c:135:5:135:10 | ExprStmt | Function f25 should return a value of type int but does not return a value here |
 | test.cpp:16:1:18:1 | { ... } | Function g2 should return a value of type MyValue but does not return a value here |
 | test.cpp:52:1:52:1 | return ... | Function g7 should return a value of type MyValue but does not return a value here |
 | test.cpp:74:1:76:1 | { ... } | Function g10 should return a value of type second but does not return a value here |