peter/spectre-meltdown-checker
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fix: better compatibility under busybox, silence buggy unzlma versions (fix #432)

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Stéphane Lesimple committed 2026-04-08 22:35:53 +02:00
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DEVELOPMENT.md
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@@ -167,6 +167,7 @@ Common traps to avoid:
| `xargs` | `-r` (no-op if empty, GNU only) | Guard with a prior `[ -n "..." ]` check, or accept the harmless empty invocation |
| `readlink` | `-f` (canonicalize, GNU only) | Use only in Linux-specific code paths, or reimplement with `cd`/`pwd` |
| `dd` | `iflag=`, `oflag=` (GNU only) | Use only in Linux-specific code paths (e.g. `/dev/cpu/*/msr`) |
| `base64` | `-w N` (set line-wrap width, GNU only; BusyBox doesn't support it) | Pipe through `tr -d '\n'` to remove newlines instead of `-w0` |
When a tool genuinely has no portable equivalent, restrict the non-portable call to a platform-specific code path (i.e. inside a BSD-only or Linux-only branch) and document why.