Hojun-Cho
83f5956df2
Every section banner dies (103 -> 0) across test/lang, the observer suites, the C carriers, and the five comment-heavy corpus fixtures; banner provenance (#N cites, carrier numbers, repair-cluster labels) folded into headers or adjacent WHY comments. Narration deleted; row provenance, ref cites, divergence pins, and layout contracts kept (fwd-ref decl-order guards and bootstrap-gate corpus rationale restored where the sweep over-cut). Comment-only proven: all 3742 wwbuild workdir .s byte-identical before/after; test-commit and test-byteid (161 lang + 1399 data, 0 pinned-divergent) green.
38 lines
1.3 KiB
Plaintext
38 lines
1.3 KiB
Plaintext
// `.len` field-read on an array whose dimension is a
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// `def` constant (`[MAX]T`) must resolve the length from the type table, the
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// cgdot sibling of the #21 cgslice fix, migrated from
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// test/wcc/989_defdim_field_run.c (#56). A `def MAX` dim arrives as a
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// non-literal node; wwstage's cgdot `.len` arms (local / let-global / def) +
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// letemitsize only handled an N_INTLIT dim, so `.len` folded to MOVQ $0 (ww
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// returned 0 where cstage reads the resolved bu->alen). The fix reads alen from
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// the stamped array tinfo (rule-13) in each arm. cstage was always correct; T2
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// (test-lang-byteid) keeps the cs==ww net the .c twin's run-compare provided.
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package defdim_field_test;
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def MAX: i32 = 5;
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let g: [MAX]u8 = [1, 2, 3, 4, 5];
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def A: [MAX]u8 = [1, 2, 3, 4, 5];
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@test fn local_len() void = {
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// local [MAX]u8 — the cgdot local arm; pre-fix ww folded to 0.
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let buf: [MAX]u8 = [1, 2, 3, 4, 5];
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assert(buf.len: i32 == 5);
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};
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@test fn global_len() void = {
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// let-global [MAX]u8 — the cgdot let-global arm.
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assert(g.len: i32 == 5);
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};
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@test fn defarr_len() void = {
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// def [MAX]u8 constant — the cgdot def arm.
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assert(A.len: i32 == 5);
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};
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@test fn sum_len() void = {
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// all three arms in one fn (the .c `sum` row): 5 + 5 + 5 = 15.
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let buf: [MAX]u8 = [1, 2, 3, 4, 5];
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assert((buf.len + g.len + A.len): i32 == 15);
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};
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