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| author | Jonathan Nieder <jrnieder@gmail.com> | 2011-03-15 16:01:34 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2011-03-15 16:01:34 +0800 |
| commit | a58d301405d96fb8ff87cffa3cabe3b110214a31 (patch) | |
| tree | da1a9fe5169b2a9e2b43a30831c912e9f3f8a1b3 /src | |
| parent | [SHELL] Improve LINENO support (diff) | |
| download | dash-a58d301405d96fb8ff87cffa3cabe3b110214a31.tar.gz dash-a58d301405d96fb8ff87cffa3cabe3b110214a31.zip | |
[EXPAND] Free IFS state after here document expansion
Here's another bug bisecting to f42e443bb ([EXPAND] Fix ifsfirst/ifslastp leak, 2010-09-08). It was found with the following test case, based on the configure script for Tracker: dash -x -c ' <<-_ACEOF $@ _ACEOF exec ' - abcdefgh + + exec �a exec: 1: : Permission denied The missing ifsfree call is in expandarg when it returns to openhere during here document expansion. Reported-by: Aurelien Jarno <aurel32@debian.org> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to '')
| -rw-r--r-- | src/expand.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/expand.c b/src/expand.c index f155ea0..ce60fe9 100644 --- a/src/expand.c +++ b/src/expand.c @@ -194,7 +194,8 @@ expandarg(union node *arg, struct arglist *arglist, int flag) p = _STPUTC('\0', expdest); expdest = p - 1; if (arglist == NULL) { - return; /* here document expanded */ + /* here document expanded */ + goto out; } p = grabstackstr(p); exparg.lastp = &exparg.list; @@ -212,12 +213,14 @@ expandarg(union node *arg, struct arglist *arglist, int flag) *exparg.lastp = sp; exparg.lastp = &sp->next; } - ifsfree(); *exparg.lastp = NULL; if (exparg.list) { *arglist->lastp = exparg.list; arglist->lastp = exparg.lastp; } + +out: + ifsfree(); } |