From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 6385 invoked by alias); 14 Nov 2012 16:54:30 -0000 Received: (qmail 6278 invoked by uid 48); 14 Nov 2012 16:54:07 -0000 From: "howarth at nitro dot med.uc.edu" To: gcc-bugs@gcc.gnu.org Subject: [Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files Date: Wed, 14 Nov 2012 16:54:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: bootstrap X-Bugzilla-Keywords: X-Bugzilla-Severity: critical X-Bugzilla-Who: howarth at nitro dot med.uc.edu X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2012-11/txt/msg01273.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #30 from Jack Howarth 2012-11-14 16:54:06 UTC --- (In reply to comment #29) Thanks with the patch applied from comment 29, now the use-after-free testcase works without errors... howarth% ./use-after-free ================================================================= ==30656== ERROR: AddressSanitizer heap-use-after-free on address 0x000108843f45 at pc 0x105b8bf12 bp 0x7fff5a0748e0 sp 0x7fff5a0748d8 READ of size 1 at 0x000108843f45 thread T0 #0 0x105b8bf11 (/Users/howarth/./use-after-free+0x100000f11) #1 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0) #2 0x0 0x000108843f45 is located 5 bytes inside of 80-byte region [0x000108843f40,0x000108843f90) freed by thread T0 here: #0 0x105b9a7a4 (/sw/lib/gcc4.8/lib/libasan.0.dylib+0xb7a4) #1 0x105b9a92a (/sw/lib/gcc4.8/lib/libasan.0.dylib+0xb92a) #2 0x105b8bee5 (/Users/howarth/./use-after-free+0x100000ee5) #3 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0) #4 0x0 previously allocated by thread T0 here: #0 0x105b9a255 (/sw/lib/gcc4.8/lib/libasan.0.dylib+0xb255) #1 0x7fff94c3b152 (/usr/lib/system/libsystem_c.dylib+0x2d152) #2 0x7fff94c3bba6 (/usr/lib/system/libsystem_c.dylib+0x2dba6) #3 0x105b8beda (/Users/howarth/./use-after-free+0x100000eda) #4 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0) Shadow byte and word: 0x1000211087e8: fd 0x1000211087e8: fd fd fd fd fd fd fd fd More shadow bytes: 0x1000211087c8: fa fa fa fa fa fa fa fa 0x1000211087d0: fa fa fa fa fa fa fa fa 0x1000211087d8: fa fa fa fa fa fa fa fa 0x1000211087e0: fa fa fa fa fa fa fa fa =>0x1000211087e8: fd fd fd fd fd fd fd fd 0x1000211087f0: fd fd fd fd fd fd fd fd 0x1000211087f8: fa fa fa fa fa fa fa fa 0x100021108800: fa fa fa fa fa fa fa fa 0x100021108808: fa fa fa fa fa fa fa fa Stats: 0M malloced (0M for red zones) by 1 calls Stats: 0M realloced by 0 calls Stats: 0M freed by 1 calls Stats: 0M really freed by 0 calls Stats: 0M (128 full pages) mmaped in 1 calls mmaps by size class: 8:2047; mallocs by size class: 8:1; frees by size class: 8:1; rfrees by size class: Stats: malloc large: 0 small slow: 1 ==30656== ABORTING I'll try to test a i386-apple-darwin10 build of gcc trunk later today (unless the multilib for libsanitizer gets fixed first and I can test -m32 on a x86_64-apple-darwin12 build).