SHLVL is a random string (uninitialized string in C) when its true value is "1000"

From	ziyunfei <446240525@qq.com>
Newsgroups	gnu.bash.bug
Subject	SHLVL is a random string (uninitialized string in C) when its true value is "1000"
Date	2015-09-17 12:29 +0800
Message-ID	<mailman.1297.1442464190.19560.bug-bash@gnu.org> (permalink)

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$ SHLVL=998 bash -c 'echo $SHLVL'
999
$ SHLVL=999 bash -c 'echo $SHLVL'

$ SHLVL=999 bash -c 'echo -n "$SHLVL" | hexdump'
0b 01
$ SHLVL=999 bash -c 'echo -n "$SHLVL" | hexdump'
0f 01
$ SHLVL=999 bash -c 'echo -n "$SHLVL" | hexdump'
04 01
$ SHLVL=1000 bash -c 'echo $SHLVL'
bash: warning: shell level (1001) too high, resetting to 1
1

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SHLVL is a random string (uninitialized string in C) when its true value is "1000" ziyunfei <446240525@qq.com> - 2015-09-17 12:29 +0800

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