Bug: bash -e misbehaves with several nested

[Pavel Fedin]

 Hello! I'd like to report a strange bug in 64-bit bash. The following script:

---- cut ---
#/bin/bash -e

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
echo Works: $DIR
---- cut ---

Simply exits and produces no output (never reaches echo). The same script works perfectly on 32 bits. Versions are the same:

--- cut ---
$ bash --version
GNU bash, version 4.4.12(3)-release (x86_64-unknown-cygwin)
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
--- cut ---
 (of course i686 version prints "i686-pc-cygwin" here)

 If i remove "-e" argument, it starts working. If i break down the sequence into two lines:
--- cut ---
#/bin/bash -e

DIR="$( dirname "${BASH_SOURCE[0]}" )"
DIR="$( cd "$DIR" && pwd )"
echo Result: $DIR
--- cut ---
 then it also works on both versions of Cygwin.

Kind regards,
Pavel Fedin
Senior Engineer
Samsung Electronics Research center Russia



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