From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-434579-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 26263 invoked by alias); 14 Nov 2013 10:48:10 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
Received: (qmail 26192 invoked by uid 48); 14 Nov 2013 10:48:06 -0000
From: "y.gribov at samsung dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/58937] Preloaded libasan segfaults on unsanitized executables
Date: Thu, 14 Nov 2013 10:48:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: sanitizer
X-Bugzilla-Version: 4.9.0
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: y.gribov at samsung dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields:
Message-ID: <bug-58937-4-LC4Pn20Qsy@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-58937-4@http.gcc.gnu.org/bugzilla/>
References: <bug-58937-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2013-11/txt/msg01356.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58937

--- Comment #11 from Yury Gribov <y.gribov at samsung dot com> ---
(In reply to Evgeniy Stepanov from comment #10)
> We don't intercept signal() on Android

This is just an implementation detail, this fails just as well:

 $ cat repro.c
 #include <stdio.h>
 #include <stdlib.h>
 #include <setjmp.h>

 int main() {
   jmp_buf env;

   int val = setjmp (env);
   if (val)
     exit (val);

   longjmp (env,101);

   return 0;
 }
 $ gcc -g repro.c
 $ LD_PRELOAD=/home/ygribov/install/gcc-master/lib64/libasan.so.0 ./a.out
 ==11784== Sanitizer CHECK failed:
/home/ygribov/gcc/gcc-master/libsanitizer/asan/asan_posix.cc:107
((tsd_key_inited)) != (0) (0, 0)