From 26bfa6e19e3eed192092dc298a7d234daadb4a7d Mon Sep 17 00:00:00 2001
From: Nicholas Clark <nick@ccl4.org>
Date: Sun, 13 Jul 2008 04:04:31 +0000
Subject: [PATCH] assert() that the pointer passed to Perl_sv_chop() lies
 within the buffer of the SV.

p4raw-id: //depot/perl@34136
---
 sv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sv.c b/sv.c
index 6ac3408..cdae779 100644
--- a/sv.c
+++ b/sv.c
@@ -4401,6 +4401,10 @@ Perl_sv_chop(pTHX_ register SV *const sv, register const char *const ptr)
     }
     assert(ptr > SvPVX_const(sv));
     SV_CHECK_THINKFIRST(sv);
+    if (SvLEN(sv))
+	assert(delta <= SvLEN(sv));
+    else
+	assert(delta <= SvCUR(sv));
 
     if (!SvOOK(sv)) {
 	if (!SvLEN(sv)) { /* make copy of shared string */
-- 
1.8.3.1