trc: fix segfault when SIGINT is received - plan9port - [fork] Plan 9 from user space
HTML git clone git://src.adamsgaard.dk/plan9port
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DIR Files
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DIR LICENSE
---
DIR commit 74be46038de399f5d5ba48bef15a3b649b883967
DIR parent 1d534ed6ceb13aa90fea2d0889bdb28ff946ac8d
HTML Author: Michael Teichgräber <mt4swm@googlemail.com>
Date: Sat, 8 Aug 2009 16:27:01 -0400
rc: fix segfault when SIGINT is received
Save the value of `runq' at the start of the function, so that the `pc'
update
at the end does work on that original value, and not on a probably
modified
value of `runq'.
fixes #14 http://code.swtch.com/plan9port/issue/14/
http://codereview.appspot.com/104066
Diffstat:
M src/cmd/rc/havefork.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
---
DIR diff --git a/src/cmd/rc/havefork.c b/src/cmd/rc/havefork.c
t@@ -110,6 +110,7 @@ Xpipe(void)
void
Xbackq(void)
{
+ struct thread *p = runq;
char wd[8193];
int c;
char *s, *ewd=&wd[8192], *stop;
t@@ -164,7 +165,7 @@ Xbackq(void)
runq->argv->words = v;
v = nextv;
}
- runq->pc = runq->code[runq->pc].i;
+ p->pc = p->code[p->pc].i;
return;
}
}