RFR: JDK-8310265: (process) jspawnhelper should not use argv[0]

Sat Jun 17 20:48:17 UTC 2023

Reported by [jarabekit at gmail.com](mailto:jarabekit at gmail.com) [1] 

jspawnhelper uses argv[0] to receive the fd string from the parent. That breaks with conventions and trips over certain tools like binfmt_misc. 

For details, see linked ML discussion. 

[1] https://mail.openjdk.org/pipermail/core-libs-dev/2023-June/107738.html

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Commit messages:
 - JDK-8310265-jspawnhelper-argv0

Changes: https://git.openjdk.org/jdk/pull/14531/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14531&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8310265
  Stats: 8 lines in 1 file changed: 4 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/14531.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14531/head:pull/14531

PR: https://git.openjdk.org/jdk/pull/14531