// E6BR-4 (param-impl SOURCE, ambiguous) — because a parameterised-impl wrapped
// SOURCE type is now registered SOURCE-AWARE (the source `*Box` flows through
// `resolveRegistrationSigTypeInSource` → `resolveCompound` → `resolveNominalLeaf`),
// a genuinely ambiguous same-name element poisons LOUDLY at registration instead of
// silently selecting a global `findByName` last-wins author. `main` flat-imports two
// `Box` authors and declares none itself, so `impl Into(Marker) for *Box` cannot
// pick a `Box` and the build exits 1.
//
// Fail-before (pre-E6BR-4): the source `*Box` fell to the no-author
// `type_bridge.resolveTemplateSignatureType` wrapper (global last-wins, no
// diagnostic), so the collision was registered silently.

#import "modules/std.sx";
#import "0827-protocols-param-impl-source-wrapped-ambiguous/a.sx";
#import "0827-protocols-param-impl-source-wrapped-ambiguous/b.sx";

Marker :: struct { v: s32; }

impl Into(Marker) for *Box {
    convert :: (self: *Box) -> Marker {
        .{ v = 0 }
    }
}

main :: () -> s32 {
    0
}