added tests as prepared by oliver

test/ref/fields.c

@@ -0,0 +1,92 @@
+/*
+  !!DESCRIPTION!! bitfield test
+  !!ORIGIN!!      LCC 4.1 Testsuite
+  !!LICENCE!!     own, freely distributeable for non-profit. read CPYRIGHT.LCC
+*/
+
+#ifdef NO_BITFIELDS
+
+main()
+{
+        printf("NO_BITFIELDS\n\r");
+}
+
+#else
+
+#ifdef SIZEOF_INT_16BIT
+
+#ifdef REFCC
+#include <stdint.h>
+struct foo {
+	int16_t a;
+	char b;
+	int16_t x : 12, y : 4;
+	int16_t zz : 1, : 0, : 4, z : 3;
+	char c;
+} x = { 1, 2, 3, 4, 5, 6 };
+
+struct baz { uint16_t a:2, b:4, c:16;} y = { 7, 8, 9};
+int16_t i = 8;
+
+#else
+
+struct foo {
+	int a;
+	char b;
+	int x : 12, y : 4;
+	int zz : 1, : 0, : 4, z : 3;
+	char c;
+} x = { 1, 2, 3, 4, 5, 6 };
+
+struct baz { unsigned int a:2, b:4, c:16;} y = { 7, 8, 9};
+int i = 8;
+#endif
+
+#else
+struct foo {
+	int a;
+	char b;
+	int x : 12, y : 4, : 0, : 4, z : 3;
+	char c;
+} x = { 1, 2, 3, 4, 5, 6 };
+
+struct baz { unsigned int a:2, b:4, c:32;} y = { 7, 8, 9};
+int i = 16;
+#endif
+
+#ifdef NO_IMPLICIT_FUNC_PROTOTYPES
+f1(struct baz *p);
+f2(struct baz *p);
+#endif
+
+main()
+{
+	printf("x = %d b:%d %d %d %d c:%d\n", x.a, x.b, x.x, x.y, x.z, x.c);
+	printf("y = %d b:%d c:%d\n", y.a, y.b, y.c);
+	x.y = i;
+	x.z = 070;
+	printf("x = %d b:%d %d %d %d c:%d\n", x.a, x.b, x.x, x.y, x.z, x.c);
+	y.a = 2;
+	y.c = i;
+	printf("y = %d b:%d c:%d\n", y.a, y.b, y.c);
+#ifdef CAST_STRUCT_PTR
+	f2((struct baz *)&x);
+#else
+	f2(&x);
+#endif
+	return 0;
+}
+
+f1(struct baz *p) {
+	p->a = p->b = 0;
+	if (p->b)
+		printf("p->b != 0!\n");
+	p->a = 0x3; p->b = 0xf;
+	printf("p->a = 0x%x, p->b = 0x%x\n", p->a, p->b);
+}
+f2(struct baz *p) {
+	p->a = (i==0);
+	p->b = (f1(p),0);
+}
+
+#endif