Missing using directive in generated precompiled query source file

[donpanl]

Bug description

Model has two entities, Blog in First namespace, and Author in Second namespace. There are two queries, one for Blogs in Program.cs, and another for Authors in Query.cs.

Queries are precompiled, then build fails with error:

/workspaces/ef-play/usingmiss/Generated/Query.EFInterceptors.Context.cs(103,64): error CS0246: The type or namespace name 'Blog' could not be found (are you missing a using directive or an assembly reference?)

It turns out that there is an unsafe accessor for Blog is added to Query.EFInterceptors.Context.cs, which is not used there. No using directive for First namespace (where Blog is) is added, which leads to the error.

If one of the two queries is removed from code, the problem disappears. It looks like generating one precompiling query source file somehow affects another one.

See attached project with minimal example.

Can be reproduced with:

> dotnet ef dbcontext optimize --output-dir Generated --precompile-queries --nativeaot --verbose
> dotnet build

usingmiss.zip

Your code

--- Model.cs

namespace First
{
    public class Blog
    {
        public int Id { get; private set; }
    }
}

namespace Second
{
    public class Author
    {
        public int Id { get; private set; }
    }
}

--- Context.cs

using Microsoft.EntityFrameworkCore;
using First;
using Second;

internal class Context : DbContext
{
    public DbSet<Blog> Blogs { get; set; } = null!;

    public DbSet<Author> Authors { get; set; } = null!;

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        base.OnConfiguring(optionsBuilder);
        optionsBuilder.UseSqlite("Data Source=tmp.db");
    }
}

--- Program.cs

using var context = new Context();
_ = context.Blogs.First();

Query.Run();

--- Query.cs

public static class Query
{
    public static void Run()
    {
        using var context = new Context();
        _ = context.Authors.First();
    }
}

Stack traces

Verbose output

EF Core version

10.0.3, 11.0.0-preview.2.26159.112

Database provider

Microsoft.EntityFrameworkCore.Sqlite

Target framework

.NET 10, .NET 11

Operating system

Ubuntu 24.04.4 LTS

IDE

No response

[roji]

Thanks for raising this. I'm putting on the backlog as we're looking at better ways to support NativeAOT, but at some point we'll do a push and I'll take a look at fixing this.