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From: Martijn Dekker <martijn@inlv.org>
Newsgroups: gnu.bash.bug
Subject: [BUG] assignments preceding 'read' persist past command in POSIX mode
Date: Thu, 24 May 2018 23:23:34 +0200
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Xref: csiph.com gnu.bash.bug:14140

In bash-20180511 and bash-20180518 snapshots and in bash 5.0.0-alpha, in 
POSIX mode, assignments preceding 'read' incorrectly persist past the 
command. 'read' is a regular builtin so they should not persist.

$ ./bash -o posix -c 'v=ok; v=bug read x </dev/null; echo "$v"'
bug

This is especially problematic because IFS assignments persist too.

Thanks,

- M.