From 59b9d304fc92a6dde818487093340550b1005aab Mon Sep 17 00:00:00 2001
From: wiz <wiz>
Date: Sat, 23 Aug 2008 15:56:28 +0000
Subject: Fix false positives in determining stack overflow when using mincore.

Using patch from Eric Blake that got committed upstream.
http://lists.gnu.org/archive/html/bug-gnulib/2008-07/msg00073.html

Bump PKGREVISION.
---
 devel/libsigsegv/Makefile         |  3 ++-
 devel/libsigsegv/distinfo         |  3 ++-
 devel/libsigsegv/patches/patch-ab | 22 ++++++++++++++++++++++
 3 files changed, 26 insertions(+), 2 deletions(-)
 create mode 100644 devel/libsigsegv/patches/patch-ab

diff --git a/devel/libsigsegv/Makefile b/devel/libsigsegv/Makefile
index ffd782b5be1..59f9c963ce9 100644
--- a/devel/libsigsegv/Makefile
+++ b/devel/libsigsegv/Makefile
@@ -1,7 +1,8 @@
-# $NetBSD: Makefile,v 1.5 2008/01/07 18:15:27 joerg Exp $
+# $NetBSD: Makefile,v 1.6 2008/08/23 15:56:28 wiz Exp $
 #
 
 DISTNAME=		libsigsegv-2.5
+PKGREVISION=		1
 CATEGORIES=		devel
 MASTER_SITES=		${MASTER_SITE_GNU:=libsigsegv/}
 
diff --git a/devel/libsigsegv/distinfo b/devel/libsigsegv/distinfo
index e93e57f1366..ac669d1d43d 100644
--- a/devel/libsigsegv/distinfo
+++ b/devel/libsigsegv/distinfo
@@ -1,6 +1,7 @@
-$NetBSD: distinfo,v 1.4 2007/11/29 18:25:22 rillig Exp $
+$NetBSD: distinfo,v 1.5 2008/08/23 15:56:28 wiz Exp $
 
 SHA1 (libsigsegv-2.5.tar.gz) = 84cf08a9aae4c4d884333421018d8127592e8c2b
 RMD160 (libsigsegv-2.5.tar.gz) = 1776563a76de4286461a779cfd2b3b47533db05e
 Size (libsigsegv-2.5.tar.gz) = 380512 bytes
 SHA1 (patch-aa) = 4786b1362d9277d4b654e8978514a7cd454eeaaa
+SHA1 (patch-ab) = eb0ca641f4355add51c5f599318ba78463a70046
diff --git a/devel/libsigsegv/patches/patch-ab b/devel/libsigsegv/patches/patch-ab
new file mode 100644
index 00000000000..d5d968f4999
--- /dev/null
+++ b/devel/libsigsegv/patches/patch-ab
@@ -0,0 +1,22 @@
+$NetBSD: patch-ab,v 1.1 2008/08/23 15:56:28 wiz Exp $
+
+--- src/stackvma-mincore.c.orig	2006-05-15 14:01:12.000000000 +0200
++++ src/stackvma-mincore.c
+@@ -227,7 +227,7 @@ mincore_is_near_this (unsigned long addr
+   unsigned long testaddr = addr - (vma->start - addr);
+   if (testaddr > addr) /* overflow? */
+     testaddr = 0;
+-  return is_unmapped (testaddr, addr);
++  return is_unmapped (testaddr, vma->start - 1);
+ }
+ 
+ #endif
+@@ -246,7 +246,7 @@ mincore_is_near_this (unsigned long addr
+   unsigned long testaddr = addr + (addr - vma->end);
+   if (testaddr < addr) /* overflow? */
+     testaddr = ~0UL;
+-  return is_unmapped (addr, testaddr);
++  return is_unmapped (vma->end, testaddr);
+ }
+ 
+ #endif
-- 
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