d8076b9333
Surface rename of the signed integer family: s1..s64 become i1..i64
(u1..u64, usize, isize unchanged). 'string' keeps the s-prefix arm in
name classification; width parsing moves to the i-prefix arm next to
isize.
Internal TypeId tags follow the surface (.s8/.s16/.s32/.s64 ->
.i8/.i16/.i32/.i64), as do mono-key mangle fragments (ptr_i64,
tu_i64_bool) and all display/diagnostic formatting (i{d}).
Migrated in the same sweep: stdlib + examples + issue repros + FFI C
companions (shared symbol names like ffi_id_i64), expected
stdout/stderr/ir snapshots, specs.md, readme.md, CLAUDE.md/AGENTS.md,
implementation_plan.md, docs/, issue writeups. Vendored stb_image and
historical flow state left untouched.
zig build test: 426/426; examples suite: 595/595.
28 lines
1.2 KiB
Plaintext
28 lines
1.2 KiB
Plaintext
// A closure VALUE (a pre-bound variable) cannot be passed into a bare
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// function-pointer slot `(...) -> ...` (ERR E5.1). The bare ABI calls
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// `fn_ptr(ctx, args)` with no env channel, so a closure's environment can't be
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// carried — passing one is unsound (drops env / shifts args / segfaults on a
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// capturing closure). Only a closure LITERAL crosses this boundary (lowerLambda
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// emits a static adapter); a variable is rejected with a pointer to the idiom.
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//
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// The fix for these is either to pass the literal directly, or to type the
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// parameter `Closure(...)` so the environment is carried (the idiomatic form).
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#import "modules/std.sx";
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E :: error { Z }
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bare :: (cb: (i64) -> i64, n: i64) -> i64 { return cb(n); }
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baref :: (cb: (i64) -> (i64, !E), n: i64) -> i64 { return cb(n) catch (e) -1; }
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main :: () -> i32 {
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inc := closure((x: i64) -> i64 => x + 1); // capture-free closure var
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base := 100;
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add := closure((x: i64) -> i64 => x + base); // CAPTURING closure var
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_ := bare(inc, 9); // reject: closure value → bare slot
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_ := baref(inc, 9); // reject: also the ∅-widening crossing
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_ := bare(add, 9); // reject: capturing closure → bare slot
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return 0;
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}
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