Path: csiph.com!goblin3!goblin1!goblin.stu.neva.ru!usenet.stanford.edu!not-for-mail From: Grisha Levit Newsgroups: gnu.bash.bug Subject: bash 5.0 nested array subscript arithmetic expansion error Date: Mon, 27 Aug 2018 12:25:30 -0400 Lines: 16 Approved: bug-bash@gnu.org Message-ID: NNTP-Posting-Host: lists.gnu.org Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" X-Trace: usenet.stanford.edu 1535387146 11522 208.118.235.17 (27 Aug 2018 16:25:46 GMT) X-Complaints-To: action@cs.stanford.edu To: bug-bash Envelope-to: bug-bash@gnu.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=89dBQHPuxJu4FqY0J5BkNWc5HnDgMuKK6JvXvOc1LSM=; b=NjPnLLFMdPR4eHuJ24TyfME5k9NVd20xbCy7/BjQq1MNaRIvpBX8gh5le7R8IeM1On T0OlzE3/wGuO2EL4TxXvxqrumsIeGhWjv5ujZyoDhvpmtzr/c63175NNrXewepOQzXmD EtdhwKx3HkMF2Yx4NpNag3rCF7nEhBqj6OGjLY5tdted/IXt3NKq/V/o4+4scZShGU5s MowE5WYu8n/bTrQf2OxnsSKLlhFpYQL9GE+okA1Se7zoKbvUjgDfuxChFpzRR0r2PiJY XWoCJb0vq+5HbEX/zrwnhfBW86A3sE3twxCtveVMQafYXp1UqrSE06BOVCk3vSyQpunU Zi6g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=89dBQHPuxJu4FqY0J5BkNWc5HnDgMuKK6JvXvOc1LSM=; b=EXX6tguyHnpe4gXpxrCJXh4UvCAeiiXKi4gKtAIUdDTIiCxvkT9lxYN2XG1iys8htt eo1FH/Izhx0jSDWKPGXqfi1yXRZ9Gpb6/BlS1+0k6Grh5mZYBKd3AA9fHEfweNRnuojJ XdT8j7VUJjpTOtexfBBaiUjw0l43SXYj1wcNZqna/H6EZqMc5DTS9Z4JMUZW2hkbT/wj lQw7hBGAKH9ffTnCNKGLp7ZHj5JD5k4Nx9ms4YcbkJgrntnaswI20CsMNV+9NJmBu5BA /sJdjsmy2hlJZkbbnsPDlI584P+t1U0rJm5kvHRz7ERN2qbNTC7f0hRNNHXby4T6IAcH re2g== X-Gm-Message-State: APzg51CiWfHHIbQswNQL7lCxE5MhNXkHow2ULpphYeqicGru4iypIJcF /vAWzyWNrd0su0Eg9A7yuiXAZNTiOyqma0kda9B4wO9jGwKuEQ== X-Google-Smtp-Source: ANB0VdZQFEngKKo5quNAE/zhJF+d8DQg9w68P+yPSQdTAvy1Qc+CuEQ+KxztIGY/QHNysqK+TEOzMZSdDO6fBqqLgcU= X-Received: by 2002:ac8:36c3:: with SMTP id b3-v6mr14708117qtc.240.1535387141312; Mon, 27 Aug 2018 09:25:41 -0700 (PDT) X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400d:c0d::22e X-BeenThere: bug-bash@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Bug reports for the GNU Bourne Again SHell List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com gnu.bash.bug:14539 This used to work: bash-4.4$ a=0 bash-4.4$ echo $(( a[a[0]] )) 0 bash-4.4$ echo ${a[a[a[0]]]} 0 But is broken in bash-5.0: bash-5.0$ a=0 bash-5.0$ echo ${a[a[a[0]]]} bash: a[a[0]]: syntax error: invalid arithmetic operator (error token is "]") bash-5.0$ echo $(( a[a[0]] )) bash: a[a[0]] : syntax error: invalid arithmetic operator (error token is "] ")