---
id: "bug-1615"
status: "fixed"
status_updated: "2026-09-24"
status_note: ""
component: "build"
severity: "unknown"
timestamp: "2026-08-21T09:37:18Z"
last_seen: "2026-09-19T09:00:00Z"
occurrences: 1
files: ["src/tools/test-dirty-fingerprint-distinguishability.sh"]
tags: ["bash", "set-u", "local", "unbound-variable", "dirty-content-fingerprint", "task-6.1", "src/tools"]
related: []
legacy: true
---

# bug-1615: src/tools/test-dirty-fingerprint-distinguishability.sh: line 344: iso_src: unbound variable

## Description
src/tools/test-dirty-fingerprint-distinguishability.sh: line 344: iso_src: unbound variable

## Environment
_Not recorded (migrated from buglog.json)._

## Reproduction
_Not recorded (migrated from buglog.json)._

## Root cause
capture_version()'s `local iso_src="$1" binary="$iso_src/$BUILD_DIR_NAME/scheduler/xce_scheduler"` put two assignments in ONE `local` statement where the second referenced the first. Bash expands every word of a single `local` command before ANY of that command's assignments take effect, so `$iso_src` in the second word's value expanded against the OLD (not-yet-declared) `iso_src`, which under `set -u` is an unbound-variable error rather than silently empty.

## Fix
Split into two separate `local` statements (`local iso_src="$1"` then `local binary="$iso_src/..."` on its own line) so the second statement's expansion happens after the first has already taken effect. Confirmed via `bash -n` plus two full real end-to-end script runs (both exit 0, byte-identical fingerprints reproduced across runs) after the fix.

## Verification
_Not recorded (migrated from buglog.json)._

## References
_Not recorded (migrated from buglog.json)._