a821323c3c
Three adjacent cells of the shared count surface still diverged from the rest; all now route through the same leaf+fold+narrow+diagnose path. 1. Aliased integer constraint bypassed the value-param range gate — only builtin constraint names matched intTypeRange, so Box(5_000_000_000) with `$K: Count` (Count :: u32) compiled and bound a truncated value. resolveValueParamArg (shared by both the struct AND type-fn binder) now resolves the constraint to its underlying builtin via canonicalIntConstraintName (Count -> u32, Small -> s8) before range-checking, so an aliased integer constraint behaves exactly like the builtin it names. 2. A named const with an expression RHS (M :: 2; N :: M + 1) did not fold as a count — moduleConstInt read only a literal RHS node. It now folds every const's RHS through the shared evalConstIntExpr, cycle-guarded (mutual / self cycles fold to null, not a stack overflow), and pass-0 pre-registers expression-RHS consts. N :: M + 1 == 3 at every consumer: dim (direct + alias), Vector lane, value-param (struct + type-fn), inline for. 3. Stateful resolveArrayLen still fabricated length 0 after a failed fold; it now returns null -> the .unresolved sentinel (no fabrication). The binding's lowering never reaches sizeOf (alloca defers it; hasErrors aborts first) and a field access on an already-diagnosed .unresolved value is poison-suppressed (emitFieldError), so a failed-fold dim emits ONE clean diagnostic with no panic. Regressions: examples/0146 (full positive matrix — every consumer x leaf form), 1135 (aliased u32 + s8 overflow), 1136 (direct non-const dim halts cleanly). The cascade cleanup also tightened 1502/1503 to one diagnostic. Unit test added for moduleConstInt expression-folding + cycle detection.
24 lines
1.0 KiB
Plaintext
24 lines
1.0 KiB
Plaintext
// A generic value-param arg that does not fit the param's declared integer type
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// is a hard error even when that type is reached through a type ALIAS
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// (`$K: Count` where `Count :: u32`, `$K: Small` where `Small :: s8`) — a clean
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// diagnostic + non-zero exit, NOT a silent truncating bind.
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//
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// Regression (issue 0083): the value-param range gate matched only BUILTIN
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// constraint names, so an aliased constraint slipped past `intTypeRange` and
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// `Box(5_000_000_000)` with `$K: Count` compiled and bound a truncated value.
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// The constraint now resolves to its underlying builtin (`Count` → u32,
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// `Small` → s8) before range-checking, so an aliased integer constraint behaves
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// exactly like the builtin it names — at both the struct and type-fn binders.
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#import "modules/std.sx";
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Count :: u32;
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Small :: s8;
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Box :: struct ($K: Count) { value: s64; }
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Tiny :: struct ($K: Small) { value: s64; }
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main :: () {
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b : Box(5000000000) = ---;
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t : Tiny(300) = ---;
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print("unreachable {} {}\n", b.value, t.value);
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}
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