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.
71 lines
1.8 KiB
Plaintext
71 lines
1.8 KiB
Plaintext
// Sub-8 nested value-struct zero-init extent, local +
|
|
// global, distinct byte asserts. Migrated from
|
|
// test/wcc/949_valstruct_subsize_run.c. A nested {[N]u8} value-struct of ABI
|
|
// size 1/2/4 once emitted a stray MOVQ $0 (local) / 8 zero DATA bytes (global)
|
|
// on wwstage that cstage didn't. cstage build+run was T1; cs==ww .s byte-id
|
|
// rides T2 (test-lang-byteid).
|
|
//
|
|
// The D1/D2 rows WRITE then READ a byte so the value is deterministic (the
|
|
// robust falsifiable dimension). The ctl_*_16 rows are the negative control: a
|
|
// >8 multi-word value-struct still zero-inits — a wrongly-suppressed >8 zero arm
|
|
// would read stack garbage (and diverge from the still-zeroing cstage on the T2
|
|
// byte-id, which is the real guarantee for the unwritten read).
|
|
|
|
package valstruct_subsize_test;
|
|
|
|
type in4 = struct { m: [4]u8 };
|
|
type ov4 = struct { i: in4 };
|
|
type in2 = struct { m: [2]u8 };
|
|
type ov2 = struct { i: in2 };
|
|
type in1 = struct { m: [1]u8 };
|
|
type ov1 = struct { i: in1 };
|
|
type in16 = struct { m: [16]u8 };
|
|
type ov16 = struct { i: in16 };
|
|
|
|
let G4: ov4;
|
|
let G2: ov2;
|
|
let G1: ov1;
|
|
let G16: ov16;
|
|
|
|
@test fn d1_local_4() void = {
|
|
let o: ov4;
|
|
o.i.m[0] = 66u8;
|
|
assert(o.i.m[0]: i32 == 66);
|
|
};
|
|
|
|
@test fn d1_local_2() void = {
|
|
let o: ov2;
|
|
o.i.m[1] = 55u8;
|
|
assert(o.i.m[1]: i32 == 55);
|
|
};
|
|
|
|
@test fn d1_local_1() void = {
|
|
let o: ov1;
|
|
o.i.m[0] = 44u8;
|
|
assert(o.i.m[0]: i32 == 44);
|
|
};
|
|
|
|
@test fn d2_global_4() void = {
|
|
G4.i.m[0] = 66u8;
|
|
assert(G4.i.m[0]: i32 == 66);
|
|
};
|
|
|
|
@test fn d2_global_2() void = {
|
|
G2.i.m[1] = 55u8;
|
|
assert(G2.i.m[1]: i32 == 55);
|
|
};
|
|
|
|
@test fn d2_global_1() void = {
|
|
G1.i.m[0] = 44u8;
|
|
assert(G1.i.m[0]: i32 == 44);
|
|
};
|
|
|
|
@test fn ctl_local_16() void = {
|
|
let o: ov16;
|
|
assert(o.i.m[7]: i32 == 0);
|
|
};
|
|
|
|
@test fn ctl_global_16() void = {
|
|
assert(G16.i.m[7]: i32 == 0);
|
|
};
|