undefined-behavior in Shell::Parser::parse heredoc initiation record()

undefined-behavior in Shell::Parser::parse heredoc initiation record(): a task in MiMo-V2.6-RL-harbor-cyber: MiMo-V2.6-RL Cyber (Harbor) (Harbor dataset). UndefinedBehaviorSanitizer: undefined-behavior in function Shell::Parser::parse heredoc initiation record() in file…

The task

UndefinedBehaviorSanitizer: undefined-behavior in function `Shell::Parser::parse_heredoc_initiation_record()` in file `serenity/Userland/Shell/Parser.cpp`

Part of FineEnvs/MiMo-V2.6-RL-harbor-cyber.