Hi all, I encountered a problem that long variable value get corrupted sometimes.
OS: Alpine linux 3.15.0 (docker container) Bash version: GNU bash, version 5.1.8(1)-release (x86_64-alpine-linux-musl) Reproduction steps: A UTF-8 encoded file containing a lot of Chinese characters, file size ~35K. A test script read content from `foo.txt` and assign the content to a variable, and then check md5sum for that variable. ```bash #!/bin/bash FOO=$(cat /tmp/foo.txt) want_q_md5=$(cat /tmp/foo.txt.md5 | cut -d ' ' -f 1) got_md5=$(echo "$FOO" | md5sum -b | cut -d ' ' -f 1) if [[ "$got_md5" != "$want_q_md5" ]]; then echo "failed" echo "$FOO" > /tmp/foo-corrupt.txt fail=true else echo "succeed" fi ``` **Sometimes**, the md5sum check failed. Output variable value to `foo-corrupt.txt` when check fail, compare it with `foo.txt`, found that a random byte are inserted into multiple positions. I created a github repo for this issue, all the scripts are there: https://github.com/chanjarster/bash-5_1_8_long_var_corrupt -- Daniel Qian Apache Committer(chanjarster) blog：https://chanjarster.github.io github：https://github.com/chanjarster segmentfault: https://segmentfault.com/u/chanjarster
