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.
57 lines
2.0 KiB
Plaintext
57 lines
2.0 KiB
Plaintext
// `&D[i]` over a DEF-array (indexed &-base), migrated from
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// test/wcc/944_def_amp_idx_run.c (#94). BOTH stages SEGV'd at the TK_AMP
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// N_INDEX N_IDENT base classify: a def-array base matched neither the local nor
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// the let leg and fell to a wrong else — cstage zero-based the addend (XORQ
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// BX,BX → wild ptr) while wwstage value-loaded the symbol (MOVQ name(SB) = D[0],
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// not its address). DIVERGENT asm, both wild — only a RUNTIME row pins this
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// class. The fix adds one def-array leg per stage mirroring the working let leg
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// (cs `def_isarraydef → LEAQ name(SB),BX`; ww `defvartnode`→isglobalarr→LEAQ),
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// so the existing i*esz scale + ADDQ round-trips; cs/ww now emit byte-identical
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// LEAQ-SB asm. The `*p` deref is spelled `let v: T = *p;` because `*p: T` parses
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// as `*(p: T)` (cast binds tighter than prefix-*), a spurious "cannot deref".
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//
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// amp_int/amp_u32/amp_arg are the SEGV repros (read the def-array element back
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// through the taken pointer, narrow esz on amp_u32); ctrl_plain/ctrl_read/ctrl_2d
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// are the controls the new leg must not perturb (plain &D, indexed read, 2D
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// &M[1][1]). Distinct def symbol names per shape since they share one module.
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package def_amp_idx_test;
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def Dint: [3]int = [1000: int, 2000: int, 3000: int];
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def Du32: [3]u32 = [1000: u32, 2000: u32, 3000: u32];
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def M2: [2][2]int = [[10: int, 20: int], [30: int, 40: int]];
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fn deref_int(p: *int) int = { let v: int = *p; return v; };
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@test fn amp_int() void = {
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let p: *int = &Dint[2];
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let v: int = *p;
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assert(v == 3000);
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};
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@test fn amp_u32() void = {
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let p: *u32 = &Du32[2];
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let v: u32 = *p;
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assert(v == 3000u32);
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};
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@test fn amp_arg() void = {
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// &D[2] as a func-arg (context-independent base).
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assert(deref_int(&Dint[2]) == 3000);
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};
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@test fn ctrl_plain() void = {
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let p: *[3]int = &Dint;
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assert((*p)[0] == 1000);
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};
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@test fn ctrl_read() void = {
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assert(Dint[1] == 2000);
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};
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@test fn ctrl_2d() void = {
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let q: *int = &M2[1][1];
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let v: int = *q;
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assert(v == 40);
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};
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