Files
sx/examples/0409-protocols-protocol-void-pointer-return.sx
agra 59f0aa7716 std: restructure — std/ modules, namespace tail, std/xml.sx
allocators/fs/process/socket/log/trace/test move under modules/std/
(allocators.sx becomes std/mem.sx; the Allocator protocol moves into
the std.sx prelude, impls stay in mem.sx). New std/xml.sx holds
xml_escape as xml.escape. std.sx gains the carried namespace tail —
flat-importing std.sx now also provides mem./xml./log. — with the
remaining modules (fs/process/socket/json/cli/hash/test) deferred from
the tail until the global last-wins maps are fully own-wins (pulling
them into every closure collides bare names corpus-wide; they stay
direct imports: modules/std/fs.sx etc.). log.sx's internal emit
renamed log_emit (it clobbered consumer fns named emit program-wide).
bundle.sx uses xml.escape via the carried alias. Consumer import paths
swept mechanically; .ir snapshots recaptured for the larger std
closure. m3te + game build unchanged.
2026-06-11 06:10:59 +03:00

31 lines
1.1 KiB
Plaintext

// 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
}