Compiler crashes with unreachable GenericPoison when passing struct type to fn(anytype) argument

[Jarred-Sumner]

Zig Version

0.11.0-dev.3723+423d7b848

Steps to Reproduce and Observed Output

Code:

fn hello(callback: fn (_: anytype) void) void {
    _ = callback("hello world!");
}

test {
    _ = hello(struct {
        pub fn callback(_: anytype) void {}
    });
}

Run:

zig test /Users/jarred/Desktop/repro.zig
thread 15006413 panic: zig compiler bug: GenericPoison
Unable to dump stack trace: debug info stripped
fish: Job 1, 'zig test /Users/jarred/Desktop/…' terminated by signal SIGABRT (Abort)

Expected Output

It should throw a compiler error with a stack trace pointing to the source location to make this easier to debug

Also, this code compiles but I don't think it should since callback is not a comptime argument?

fn @"hello!"(comptime Context: type, ctx: Context, callback: (fn (ctx: anytype, expr: anytype) ?*anyopaque)) void {
    _ = callback(ctx, "hello world!");
}

test {
    _ = @"hello!"(void, {}, struct {
        pub fn callback(ctx: anytype, expr: anytype) ?*anyopaque {
            _ = ctx;
            _ = expr;
            return null;
        }
    }.callback);
}