JehanneOS/mksh
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

correctly handle nested ADELIM parsing: ADELIM doubles as CSUBST (LP#1453827)

Browse Source
This commit is contained in:
tg
2016-01-14 22:30:43 +00:00
parent 000580ca8f
commit 0141794c2e
2 changed files with 21 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
eval.c
View File

@ -2,7 +2,7 @@
/*-
* Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
* 2011, 2012, 2013, 2014, 2015
* 2011, 2012, 2013, 2014, 2015, 2016
* mirabilos <m@mirbsd.org>
*
* Provided that these terms and disclaimer and all copyright notices
@ -23,7 +23,7 @@
#include "sh.h"
__RCSID("$MirOS: src/bin/mksh/eval.c,v 1.178 2015/12/12 22:24:07 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/eval.c,v 1.179 2016/01/14 22:30:43 tg Exp $");
/*
* string expansion
@ -437,8 +437,6 @@ expand(
beg = wdcopy(sp, ATEMP);
mid = beg + (wdscan(sp, ADELIM) - sp);
stg = beg + (wdscan(sp, CSUBST) - sp);
if (mid >= stg)
goto unwind_substsyn;
mid[-2] = EOS;
if (mid[-1] == /*{*/'}') {
sp += mid - beg - 1;
@ -446,9 +444,8 @@ expand(
} else {
end = mid +
(wdscan(mid, ADELIM) - mid);
if (end >= stg ||
/* more than max delimiters */
end[-1] != /*{*/ '}')
if (end[-1] != /*{*/ '}')
/* more than max delimiters */
goto unwind_substsyn;
end[-2] = EOS;
sp += end - beg - 1;
@ -488,8 +485,6 @@ expand(
s = wdcopy(sp, ATEMP);
p = s + (wdscan(sp, ADELIM) - sp);
d = s + (wdscan(sp, CSUBST) - sp);
if (p >= d)
goto unwind_substsyn;
p[-2] = EOS;
if (p[-1] == /*{*/'}')
d = NULL;