66bdc70bf1
Move examples/*.sx and their expected/ snapshots into per-category subfolders (examples/<category>/...). Folder = leading filename token, with ffi-objc/ffi-jni kept whole; filenames are unchanged. The corpus runner and LSP sweep now discover each category's expected/ dir, while issues/ stays flat. Example 1058's repo-root-relative companion import is made file-relative. Path strings embedded in 164 snapshots were regenerated (path-only changes). Test-layout docs in CLAUDE.md updated.
33 lines
1.1 KiB
Plaintext
33 lines
1.1 KiB
Plaintext
// Taking the address of a promoted anonymous-struct union member yields a
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// pointer to that member's slot, so mutating through the pointer is visible
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// through the member. The write path (`v.x = 41`) and the read path already
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// resolve promoted members; the lvalue-pointer path (`@v.x`) now resolves them
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// too, via the shared field-lvalue resolver.
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//
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// Regression (issue 0094, attempt 2): lowerExprAsPtr's union branch handled
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// only DIRECT union field names, so `@v.x` on a promoted member reported
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// "field 'x' not found on type 'Vec2'" even though `v.x = 41` worked. The
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// over-rejection is gone, and a member that is NOT at offset 0 (`v.y`) resolves
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// to its own slot — not a default field 0.
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#import "modules/std.sx";
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Vec2 :: union {
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data: [2]i64;
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struct { x: i64; y: i64; };
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}
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bump :: (p: *i64) {
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p.* = p.* + 1;
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}
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main :: () {
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v : Vec2 = ---;
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v.x = 41;
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v.y = 100;
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bump(@v.x); // promoted member at offset 0 → 42
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bump(@v.y); // promoted member at offset 8 → 101 (its own slot)
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print("x={}\n", v.x);
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print("y={}\n", v.y);
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}
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