Changes in r3907 fixed basic big-endian byte extract

git-svn-id: svn+ssh://svn.cprover.org/srv/svn/cbmc/trunk@4312 6afb6bc1-c8e4-404c-8f48-9ae832c5b171

regression/cbmc/Endianness7/main.c

@@ -0,0 +1,22 @@
+#include <assert.h>
+
+struct S
+{
+  short a;
+  short b;
+};
+
+int main()
+{
+  if(sizeof(short)!=2 ||
+     sizeof(int)!=4 ||
+     sizeof(struct S)!=4)
+    return 0;
+
+  struct S s;
+  s.a=0x0201;
+  s.b=0x0403;
+  assert(*(int*)&s==0x02010403);
+
+  return 0;
+}

regression/cbmc/Endianness7/test.desc

@@ -0,0 +1,8 @@
+CORE
+main.c
+--big-endian --no-simplify
+^EXIT=0$
+^SIGNAL=0$
+^VERIFICATION SUCCESSFUL$
+--
+^warning: ignoring