std: force refAllDecls to actually resolve all decls

Only about half of the tests in std were actually being run (918 vs 2144).

lib/std/testing.zig

@@ -466,6 +466,8 @@ test {
 pub fn refAllDecls(comptime T: type) void {
     if (!builtin.is_test) return;
     inline for (comptime std.meta.declarations(T)) |decl| {
+        if (decl.is_pub and @typeInfo(@TypeOf(@field(T, decl.name))) == .Struct)
+            _ = @hasDecl(@field(T, decl.name), "foo");
         _ = decl;
     }
 }

lib/std/zig/c_translation.zig

@@ -166,7 +166,7 @@ pub fn sizeof(target: anytype) usize {
                 const array_info = @typeInfo(ptr.child).Array;
                 if ((array_info.child == u8 or array_info.child == u16) and
                     array_info.sentinel != null and
-                    array_info.sentinel.? == 0)
+                    @ptrCast(*const array_info.child, array_info.sentinel.?).* == 0)
                 {
                     // length of the string plus one for the null terminator.
                     return (array_info.len + 1) * @sizeOf(array_info.child);

lib/std/zig/parser_test.zig

@@ -585,15 +585,6 @@ test "zig fmt: asm expression with comptime content" {
     );
 }
 
-test "zig fmt: anytype struct field" {
-    try testCanonical(
-        \\pub const Pointer = struct {
-        \\    sentinel: anytype,
-        \\};
-        \\
-    );
-}
-
 test "zig fmt: array types last token" {
     try testCanonical(
         \\test {
@@ -4148,6 +4139,17 @@ test "zig fmt: container doc comments" {
     );
 }
 
+test "zig fmt: anytype struct field" {
+    try testError(
+        \\pub const Pointer = struct {
+        \\    sentinel: anytype,
+        \\};
+        \\
+    , &[_]Error{
+        .expected_type_expr,
+    });
+}
+
 test "zig fmt: extern without container keyword returns error" {
     try testError(
         \\const container = extern {};