You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
82 lines
2.3 KiB
82 lines
2.3 KiB
From 0cefeca1fd2405ad1b5544a3919e0000377fde5e Mon Sep 17 00:00:00 2001
|
|
From: Tony Cook <tony@develop-help.com>
|
|
Date: Tue, 21 Feb 2017 16:38:36 +1100
|
|
Subject: [PATCH] (perl #130822) fix an AV leak in Perl_reg_named_buff_fetch
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
Ported to 5.24.1:
|
|
|
|
commit 853eb961c1a3b014b5a9510740abc15ccd4383b6
|
|
Author: Tony Cook <tony@develop-help.com>
|
|
Date: Tue Feb 21 16:38:36 2017 +1100
|
|
|
|
(perl #130822) fix an AV leak in Perl_reg_named_buff_fetch
|
|
|
|
Originally noted as a scoping issue by Andy Lester.
|
|
|
|
Signed-off-by: Petr Písař <ppisar@redhat.com>
|
|
---
|
|
regcomp.c | 5 +----
|
|
t/op/svleak.t | 12 +++++++++++-
|
|
2 files changed, 12 insertions(+), 5 deletions(-)
|
|
|
|
diff --git a/regcomp.c b/regcomp.c
|
|
index 6329f6c..989c528 100644
|
|
--- a/regcomp.c
|
|
+++ b/regcomp.c
|
|
@@ -7849,21 +7849,18 @@ SV*
|
|
Perl_reg_named_buff_fetch(pTHX_ REGEXP * const r, SV * const namesv,
|
|
const U32 flags)
|
|
{
|
|
- AV *retarray = NULL;
|
|
SV *ret;
|
|
struct regexp *const rx = ReANY(r);
|
|
|
|
PERL_ARGS_ASSERT_REG_NAMED_BUFF_FETCH;
|
|
|
|
- if (flags & RXapif_ALL)
|
|
- retarray=newAV();
|
|
-
|
|
if (rx && RXp_PAREN_NAMES(rx)) {
|
|
HE *he_str = hv_fetch_ent( RXp_PAREN_NAMES(rx), namesv, 0, 0 );
|
|
if (he_str) {
|
|
IV i;
|
|
SV* sv_dat=HeVAL(he_str);
|
|
I32 *nums=(I32*)SvPVX(sv_dat);
|
|
+ AV * const retarray = (flags & RXapif_ALL) ? newAV() : NULL;
|
|
for ( i=0; i<SvIVX(sv_dat); i++ ) {
|
|
if ((I32)(rx->nparens) >= nums[i]
|
|
&& rx->offs[nums[i]].start != -1
|
|
diff --git a/t/op/svleak.t b/t/op/svleak.t
|
|
index b0692ff..eeea7c1 100644
|
|
--- a/t/op/svleak.t
|
|
+++ b/t/op/svleak.t
|
|
@@ -15,7 +15,7 @@ BEGIN {
|
|
|
|
use Config;
|
|
|
|
-plan tests => 133;
|
|
+plan tests => 134;
|
|
|
|
# run some code N times. If the number of SVs at the end of loop N is
|
|
# greater than (N-1)*delta at the end of loop 1, we've got a leak
|
|
@@ -557,3 +557,13 @@ EOF
|
|
sub lk { { my $d = $op->hints_hash->HASH } }
|
|
::leak(3, 0, \&lk, q!B::RHE->HASH shoudln't leak!);
|
|
}
|
|
+
|
|
+{
|
|
+ # Perl_reg_named_buff_fetch() leaks an AV when called with an RE
|
|
+ # with no named captures
|
|
+ sub named {
|
|
+ "x" =~ /x/;
|
|
+ re::regname("foo", 1);
|
|
+ }
|
|
+ ::leak(2, 0, \&named, "Perl_reg_named_buff_fetch() on no-name RE");
|
|
+}
|
|
--
|
|
2.7.4
|
|
|