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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
Download patch file Download diff file Expand all files Collapse all files

14
selfhost/check/check_stmt.ludic
View file

@ -107,6 +107,13 @@ function ck_stmt(s: Node) -> void {
if k == S_EXPR { ck_expr(s.a); return }
if k == S_MATCH { ck_match(s); return }
if k == S_EMIT { ck_emit(s); return }
if k == S_UNSAFE {
ck_unsafe_here(s)
ck_unsafe += 1
ck_block(s.a)
ck_unsafe -= 1
return
}
}
function ck_fn_body(d: Node) -> void {
let m = ck_mark()
@ -117,7 +124,12 @@ function ck_fn_body(d: Node) -> void {
}
ck_ret = d.ty
if ck_ret == null { ck_ret = "void" }
if d.uns == 1 {
ck_unsafe_here(d)
ck_unsafe += 1
}
ck_block(d.a)
if d.uns == 1 { ck_unsafe -= 1 }
ck_ret = "void"
ck_pop(m)
}
@ -140,7 +152,7 @@ function check_program() -> void {
gen_collect()
ck_index()
var i = 0
while i < g_prog_user_end {
while i < len(prog) {
let d = prog[i]
if d.kind == N_FN { ck_fn_body(d) }
if d.kind == N_MAIN or d.kind == N_TEST { ck_block(d.a) }