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feat(lang): L7 memory is safe unless it says unsafe

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The typed buffers are slices: words/floats/fixeds/doubles/pointers(n) make
zeroed, bounds-checked []int/[]float/... and the type names mean them. buffer(n)
is a []byte, with text_of, Fs.read_bytes/write_bytes and view(xs, start, n).
bytes(), indexing a raw pointer or bytes, free, resize, Memory.*, raw file calls,
data_of and C externs are refused outside unsafe { } / unsafe function, and a
project's own files may write unsafe only with --unsafe; the runtime and packages
are the platform. A slice passed to an extern goes as its data.

What the change found: Sync's atomics on a slice header, words(n) uninitialised,
input's fixed axes in ints, truetype's fixed outlines as ints, skin matrices
typed int, gl_shader's source table made from raw bytes. render3d gets safe
entry points (safe_api.ludic). Rendering is byte-identical; a frame costs the same.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-24 12:53:27 +03:00
parent 9259808f80
commit b0b0b62bce
70 changed files with 69189 additions and 64569 deletions
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13
selfhost/backend/emit_intrin2.ludic
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@ -35,16 +35,23 @@ function is_intrinsic2(name: pointer) -> bool {
function emit_intrinsic2(name: pointer, e: Node) -> Val {
if (name == "free") {
let p = arg_code(e, 0); emit(" call void @free(ptr "); emit(p); emit(")\n"); return val("0", "void")
let fv = emit_expr(e.kids[0])
# a slice is its elements and its header: both go (L7)
if is_slice_ty(fv.ty) {
let fd = emit_bind(`load ptr, ptr {slice_field(fv.code, 0)}`)
emit(` call void @free(ptr {fd})\n`)
}
emit(` call void @free(ptr {fv.code})\n`)
return val("0", "void")
}
if (name == "fill") {
let p = arg_code(e, 0); let v = arg_code(e, 1); let n = arg_code(e, 2)
let p = raw_expr(e.kids[0]).code; let v = arg_code(e, 1); let n = arg_code(e, 2)
let w = emit_bind(`zext i32 {n} to i64`)
emit(" call ptr @memset(ptr "); emit(p); emit(", i32 "); emit(v); emit(", i64 "); emit(w); emit(")\n")
return val("0", "void")
}
if (name == "offset") {
let p = arg_code(e, 0); let n = arg_code(e, 1)
let p = raw_expr(e.kids[0]).code; let n = arg_code(e, 1)
let g = nreg()
emit(" "); emit(g); emit(" = getelementptr inbounds i8, ptr "); emit(p); emit(", i32 "); emit(n); emit("\n")
return val(g, "pointer")