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.
36 lines
1.4 KiB
Plaintext
36 lines
1.4 KiB
Plaintext
// Passing a slice of a `def`-dimensioned array
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// (`take(buf[1:])` on `[MAX]T`) as a call argument must resolve the default-hi
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// length from the type table, the N_SLICE arg-push member of the def-dim
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// family, migrated from test/wcc/989_defdim_argslice_run.c (#56 c4). pushargsrev's
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// N_SLICE default-hi arms (local / global) only handled an N_INTLIT dim, so a
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// plain `[MAX]u8` base emitted nothing and the pushed slice header's len word
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// was left stale -- the callee read garbage (ww 135 local / 255 global). The
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// fix reads alen from the stamped array tinfo (rule-13) in both arg-push arms.
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// `take` returns s.len, so the asserted 4 IS the pushed-header length contract;
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// the litctrl row pins the N_INTLIT path so the new else-arm can't perturb it.
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// T2 (test-lang-byteid) keeps the cs==ww net the .c twin's run-compare gave.
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package defdim_argslice_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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fn take(s: []u8) i32 = { return s.len: i32; };
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@test fn local_argslice() void = {
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// local def-dim base: take(buf[1:]) sees len 5-1 = 4.
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let buf: [MAX]u8 = [1, 2, 3, 4, 5];
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assert(take(buf[1:]) == 4);
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};
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@test fn global_argslice() void = {
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// global def-dim base: take(g[1:]) sees len 4.
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assert(take(g[1:]) == 4);
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};
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@test fn litctrl_argslice() void = {
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// literal-dim control: the N_INTLIT arm stays correct (no regress).
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let buf: [5]u8 = [1, 2, 3, 4, 5];
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assert(take(buf[1:]) == 4);
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};
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