// A protocol method declared `-> *void` (literal void-pointer return,
// NOT `Self`) returns the underlying impl's pointer to the caller
// unchanged. The dispatch path must NOT auto-load from the result —
// `*void` outside a `Self`-disguise is a real pointer whose pointee
// size is unknown.
//
// Regression: target_type leaks from the surrounding scope (e.g. the
// enclosing function's return type). The dispatcher used to auto-load
// `sizeof(target_type)` bytes from every `*void` return, mistaking
// real pointers for Self-encoded boxes. Result was that
// `alloc.alloc(64)` through an Allocator protocol value returned the
// first 4 bytes of malloc'd memory interpreted as `s32` (= 0 → null).

#import "modules/std.sx";
#import "modules/std/mem.sx";

main :: () -> s32 {
    gpa := GPA.init();
    alloc : Allocator = xx gpa;

    p_direct := gpa.alloc(64);
    print("direct: null? {}\n", p_direct == null);

    p_protocol := alloc.alloc(64);
    print("protocol: null? {}\n", p_protocol == null);

    print("alloc_count: {}\n", gpa.alloc_count);

    0
}