From: Peter Stephenson <p.stephenson@samsung.com>
To: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: SEGV with alias\
Date: Fri, 24 Jul 2015 09:53:22 +0100 [thread overview]
Message-ID: <20150724095322.7dba34af@pwslap01u.europe.root.pri> (raw)
In-Reply-To: <150723193351.ZM16103@torch.brasslantern.com>
On Thu, 23 Jul 2015 19:33:51 -0700
Bart Schaefer <schaefer@brasslantern.com> wrote:
> On Jul 23, 3:18pm, Bart Schaefer wrote:
> } Subject: Re: SEGV with alias\
> }
> } On Thu, Jul 23, 2015 at 2:52 PM, Daniel Shahaf <d.s@daniel.shahaf.name> wrote:
> } > [CCing reporter of the recent ihungetc() issue]
> } >
> } > Typing <l><s><Backslash><Enter><Enter> may segfault if 'ls' is aliased.
> }
>
> It doesn't crash any more, but with debug enabled it prints
> Warning: backing up wrong character.
> forever.
I can stop this cleanly, but I still don't know what the code chunk is
doing.
pws
diff --git a/Src/hist.c b/Src/hist.c
index cf224cb..75e809c 100644
--- a/Src/hist.c
+++ b/Src/hist.c
@@ -906,7 +906,8 @@ ihungetc(int c)
while (!lexstop && !errflag) {
if (hptr[-1] != (char) c && stophist < 4 &&
hptr > chline + 1 && hptr[-1] == '\n' && hptr[-2] == '\\' &&
- !(histactive & HA_UNGET)) {
+ !(histactive & HA_UNGET) &&
+ (inbufflags & (INP_ALIAS|INP_HIST)) != INP_ALIAS) {
histactive |= HA_UNGET;
hungetc('\n');
hungetc('\\');
prev parent reply other threads:[~2015-07-24 8:53 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-23 21:52 Daniel Shahaf
2015-07-23 22:18 ` Bart Schaefer
2015-07-24 2:33 ` Bart Schaefer
2015-07-24 8:53 ` Peter Stephenson [this message]
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