Support _Alignof

Author: michael-schwarz

src/frontc/clexer.mll

@@ -183,6 +183,7 @@ let init_lexicon _ =
       ("__typeof", fun loc -> TYPEOF loc);
       ("typeof", fun loc -> TYPEOF loc);
       ("__alignof", fun loc -> ALIGNOF loc);
+      ("_Alignof", fun loc -> ALIGNOF loc);
       ("__alignof__", fun loc -> ALIGNOF loc);
       ("__volatile__", fun loc -> VOLATILE loc);
       ("__volatile", fun loc -> VOLATILE loc);

test/small1/c11-align-of.c

@@ -0,0 +1,8 @@
+#include "testharness.h"
+#include <stdnoreturn.h>
+
+
+int main() {
+    int x = _Alignof (int);
+    SUCCESS;
+}

test/testcil.pl

@@ -699,6 +699,7 @@ sub addToGroup {
 addTest("testrunc11/c11-noreturn");
 addTest("testrunc11/c11-atomic");
 addTest("testrunc11/c11-static-assert");
+addTest("testrunc11/c11-static-align-of");
 addTest("testrunc11/gcc-c11-generic-1");
 # TODO: these messages are not even checked?
 addTestFail("testc11/gcc-c11-generic-2-1", "Multiple defaults in generic");