[svn r92] Fixed support for statically initialized unions. lots of bugfixes as cleanups too.

test/bug51.d

@@ -0,0 +1,26 @@
+module bug51;
+
+import std.stdint;
+
+union in6_addr
+{
+    private union _in6_u_t
+    {
+        uint8_t[16] u6_addr8;
+        uint16_t[8] u6_addr16;
+        uint32_t[4] u6_addr32;
+    }
+    _in6_u_t in6_u;
+
+    uint8_t[16] s6_addr8;
+    uint16_t[8] s6_addr16;
+    uint32_t[4] s6_addr32;
+}
+
+
+const in6_addr IN6ADDR_ANY = { s6_addr8: [0] };
+const in6_addr IN6ADDR_LOOPBACK = { s6_addr8: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1] };
+
+void main()
+{
+}

test/union7.d

@@ -0,0 +1,48 @@
+module union7;
+
+pragma(LLVM_internal, "notypeinfo")
+struct Union
+{
+    union {
+        double g;
+        struct {
+            short s1,s2,s3,s4;
+        }
+    }
+    union {
+        float f;
+        long l;
+    }
+}
+
+Union a = { f:4f };
+Union b = { 3.0, f:2 };
+Union c = { l:42, g:2.0 };
+Union d = { s2:3 };
+Union e = { s1:3, s4:4, l:5 };
+
+void main()
+{
+    assert(a.f == 4f);
+    assert(a.g !<>= 0.0);
+    assert((a.l>>>32) == 0);
+
+    assert(b.g == 3.0);
+    assert(b.f == 2f);
+
+    assert(c.l == 42);
+    assert(c.g == 2.0);
+
+    assert(d.s1 == 0);
+    assert(d.s2 == 3);
+    assert(d.s3 == 0);
+    assert(d.s4 == 0);
+    {assert(d.f !<>= 0f);}
+    {}
+    assert(e.s1 == 3);
+    assert(e.s2 == 0);
+    assert(e.s3 == 0);
+    {assert(e.s4 == 4);}
+    {}
+    assert(e.l == 5);
+}