added tests as prepared by oliver

test/val/cc65091020.c

@@ -0,0 +1,26 @@
+/*
+  !!DESCRIPTION!! bit field bug
+  !!ORIGIN!!      testsuite
+  !!LICENCE!!     Public Domain
+  !!AUTHOR!!      Johan Kotlinski
+*/
+
+#include <assert.h>
+
+struct {
+    int foo : 7;
+    int bar : 4;
+} baz = { 0, 2 };
+
+int main() {
+    char bar = baz.bar;
+
+    assert(2 == bar);
+
+    printf("it works :)\n");
+
+    /* if not assert() */
+    return 0;
+}
+
+/* Assert fails. (SVN rev 4381) */