cobj.exe segfaults on reference modification (dynamic / out-of-bounds offset) on Windows

[ytr-sakamoto]

Parent issue: #828

Description

On Windows, cobj.exe segfaults when compiling test cases involving reference modification — dynamic reference modification and out-of-bounds offsets.

Affected tests

• tests/run.src/ref-mod.at:
  • Dynamic reference modification
  • Offset out of bounds in MOVE (1)
  • Offset out of bounds in MOVE (2)
• Currently skipped on Windows via AT_SKIP_IF (introduced in ci: run autotest-based tests on Windows using Git Bash #823).

Environment

• Windows (Git Bash in CI)

Expected behavior

cobj.exe should compile successfully and produce the same runtime diagnostics as on Linux.

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説明

Windows 上で cobj.exe が、参照変更（動的参照変更、オフセット範囲外）を含むテストケースのコンパイル時に segfault します。

対象テスト

• tests/run.src/ref-mod.at:
  • Dynamic reference modification
  • Offset out of bounds in MOVE (1)
  • Offset out of bounds in MOVE (2)
• ci: run autotest-based tests on Windows using Git Bash #823 にて Windows では AT_SKIP_IF でスキップ中。

環境

• Windows (CI の Git Bash)

期待される動作

Linux と同様にコンパイルが成功し、同じランタイム診断が得られること。