Hojun-Cho
132ea4ee60
Final fold-2 chunk. The 12 Fam13 single-file value drivers move from test/wcc/*_run.c into in-language @test row-tables under test/lang/: - value rows -> test/lang/*_test.ww (12 files) - reject rows -> runww //ww:error carriers (13, dual-stage non-vacuous) - nullable abort rows -> runww //ww:run-exit 1 carriers (3) - 953_globalslice_arg -> _runonly (cs!=ww checker divergence, #28) - 788 value_not_type_neg + 953_arrlit_slice reject_assign kept as slim rc-only .c pins (divergent-diag dual-reject, mutation-gated); 788 #29 Coverage parity verified row-by-row vs each retired driver; advisor- ratified carve taxonomy; two-round reviewed. Floor ratchet follows.
53 lines
1.6 KiB
Plaintext
53 lines
1.6 KiB
Plaintext
// slice_global_arg_runonly_test — #148 (D2): a module-global slice passed BY
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// VALUE as a slice arg must arrive with a real header, not garbage. Migrated
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// from test/wcc/953_globalslice_arg_run.c.
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//
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// _runonly: CSTAGE-ONLY. wwstage's checker rejects a module-level `const []T`
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// global ("let: not assignable", filed task #28), so this file does not compile
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// under w6c_ww and is excluded from the T2 byte-id corpus. test-lang runs it
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// through the cstage `ww test` only.
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//
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// Pre-fix the slice-ident call-arg fast path emitted BP-relative pushes for a
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// global (localfind→0), reading saved-BP/RIP garbage instead of the global's
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// header at name(SB). The fix mirrors the N_SLICE arm's isglobal dispatch. The
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// callee reads .len AND a byte, so a wrong header is observable; u32_global
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// pins the path is element-width-agnostic; direct_read + local_arg lock the
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// in-place read and the off!=0 local arm against regression.
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package slice_global_arg_runonly_test;
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const dotdot: []u8 = ['.', '.'];
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const dot: []u8 = ['.'];
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const g: []u32 = [7u32, 8u32, 9u32];
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const d: []u32 = [11u32, 22u32];
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fn seen_u8(bs: []u8) i32 = {
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return bs.len: i32 * 1000 + bs[0]: i32;
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};
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fn seen_u32(xs: []u32) i32 = {
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return xs.len: i32 * 100 + xs[0]: i32 + xs[2]: i32;
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};
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@test fn u8_dotdot() void = {
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assert(seen_u8(dotdot) == 2046);
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};
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@test fn u8_dot() void = {
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assert(seen_u8(dot) == 1046);
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};
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@test fn u32_global() void = {
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assert(seen_u32(g) == 316);
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};
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@test fn direct_read() void = {
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assert(d.len: i32 * 100 + d[0]: i32 + d[1]: i32 == 233);
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};
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@test fn u8_local_arg() void = {
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let a: [2]u8 = ['.', '.'];
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let s: []u8 = a[0:2];
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assert(seen_u8(s) == 2046);
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};
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