Gforth hangs forever when running "see +"

Running "see +", gforth shows "Code +", and then hangs forever.

This is due to gforth relying on gdb to disassemble specified word, but the default value for /proc/sys/kernel/yama/ptrace_scope on Unbuntu is 1, which only allows a process to trace its children, so the attach fails, so the gdb script fails, so gdb never exits, and gforth waits forever for gdb to exit.

The upstream bug is https://savannah.gnu.org/bugs/?63730, and already contains a patch that fixes the issue for Ubuntu 22.04 (but fails for Debian 7, so it will probably not be fixed this way upstream).

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: gforth 0.7.3+dfsg-9build4.1
ProcVersionSignature: Ubuntu 5.15.0-58.64-generic 5.15.74
Uname: Linux 5.15.0-58-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Jan 30 20:03:38 2023
InstallationDate: Installed on 2021-09-23 (494 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420)
SourcePackage: gforth
UpgradeStatus: Upgraded to jammy on 2022-05-24 (251 days ago)