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fix(gen-verilog): _ discard in tuple destructure gets a throwaway reg - #1978

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fix/verilog-tuple-discard
Aug 8, 2026
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fix(gen-verilog): _ discard in tuple destructure gets a throwaway reg#1978
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fix/verilog-tuple-discard

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Refs #1948

(link1, _) = create_2node_mesh(50) emitted {_, link1} = call() — Verilog has no _ wildcard, so iverilog reported "Could not find variable _". Each _ position declares a throwaway reg keyed by (line, index) at its element width; the LHS concat references it.

tri-net corpus: icarus 94 → 95 (mesh_node_sim). bridge.v regenerated; unit suite at the single pre-existing red. FROZEN_HASH resealed; NOW.md entries added.

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Refs #1948

`(link1, _) = create_2node_mesh(50)` emitted `{_, link1} = call()` --
Verilog has no `_` wildcard, so iverilog reported "Could not find
variable _". Each `_` position now declares a throwaway reg keyed by
(line, index) at its element width, and the LHS concat references it.

tri-net corpus: icarus 94 -> 95 (mesh_node_sim). bridge.v regenerated;
unit suite at the single pre-existing red. FROZEN_HASH resealed.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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gHashTag enabled auto-merge (squash) August 8, 2026 21:08
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Generated at: 2026-08-08 21:08:39 UTC

Summary

Status Count
Total Open PRs 15
PRs with Failing Checks 2
PRs with All Checks Green 13
READY 5
FAILING 2
PENDING 0

Seal Status

  • ⚠️ STALE -- sha256(compiler.rs)=fbbe3e1568e8 != manifest seal=87e5cbd3ad94.
    The committed NMSE numbers were certified against an older compiler.rs.
    Run scripts/reseal-check.sh locally for the two-step reseal command (advisory; not a merge gate).

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gHashTag merged commit 33f99af into master Aug 8, 2026
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