tree 92aaf06801f38754d41e039038d538959cefb866
parent 30af5938afad076e12b8ece123cab0b8bc92a596
author Denys Vlasenko <vda.linux@googlemail.com> 1631055413 +0200
committer Denys Vlasenko <vda.linux@googlemail.com> 1631055413 +0200

ash: parser: Save and restore heredoclist in expandstr

Upstream commit:

    Date: Sun, 17 May 2020 23:36:25 +1000
    parser: Save and restore heredoclist in expandstr

    On Sun, May 17, 2020 at 01:19:28PM +0100, Harald van Dijk wrote:
    > This still does not restore the state completely. It does not clean up any
    > pending heredocs. I see:
    >
    >   $ PS1='$(<<EOF "'
    >   src/dash: 1: Syntax error: Unterminated quoted string
    >   $(<<EOF ":
    >   >
    >
    > That is, after entering the ':' command, the shell is still trying to read
    > the heredoc from the prompt.

    This patch saves and restores the heredoclist in expandstr.

    It also removes a bunch of unnecessary volatiles as those variables
    are only referenced in case of a longjmp other than one started by
    a signal like SIGINT.

function                                             old     new   delta
expandstr                                            268     255     -13

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>