CVS commit: src/bin/sh

["Robert Elz" <kre%netbsd.org@localhost>]

Module Name:    src
Committed By:   kre
Date:           Wed Jan  9 10:57:44 UTC 2019

Modified Files:
        src/bin/sh: eval.c

Log Message:
When an error occurs in a builtin from which we do not exit
(a normal builtin, though those are not genrally an issue for
this problem, or a special builtin that has been prefixed by "command")
make sure that we discard any pending input that might have been
queued up, but not yet processed.

We had the mechanism to fix this from when expansion of PS1 etc
was added (which has a similar problem to deal with) - all taken
from FreeBSD - but did not bother to use it here until now...

This fixes an error detected by newly added ATF tests of the eval
builtin, where
        eval 'syntax error
                another command'
would go ahead and evaluate "another command" which should not
happen (note: only when there was a \n between the two).


To generate a diff of this commit:
cvs rdiff -u -r1.168 -r1.169 src/bin/sh/eval.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.