Compiler incorrectly detects dependency loop when using `@typeInfo(@This())` in test

[SpexGuy]

Minimal Repro (tested with 0.5.0 compiler) :

const DrawCallback = fn (cmd: *DrawCmd) void;

const DrawCmd = struct {
    UserCallback: DrawCallback,
};

test "bork" {
    //var x: DrawCmd = undefined;
    _ = @typeInfo(@This());
}

Compiling this yields this error:

C:\bork.zig:4:19: error: dependency loop detected
 C:\bork.zig:1:22: note: referenced here
 C:\bork.zig:1:1: note: referenced here
 C:\bork.zig:9:9: note: referenced here

If I uncomment the first line in the test block, the program compiles successfully.

(edit: even more minimal test case)

[FireFox317]

This passes with #4435

Edit: Nvm, it still shows the error when doing _ = @typeInfo(@This()).Struct.decls[0];

[marler8997]

This also causes the dependency loop error:

test "" {
    @import("std").testing.refAllDecls(@This());
}

[marler8997]

This one bit me again today. The original example no longer causes the issue to trigger though, here's a version that still triggers it:

const DrawCallback = fn (cmd: *DrawCmd) void;
const DrawCmd = struct {
    UserCallback: DrawCallback,
};
comptime { _ = DrawCallback; }