[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #39 from Alexander Potapenko glider at google dot com 2012-11-15 08:18:01 UTC --- I agree with Kostya that no major changes to mach_override are necessary because we are really going to dump it. However minor fixes required for ASan in GCC to work on Darwin right now should be perfectly ok. As there currently are issues blocking the dynamic ASan runtime (e.g. https://code.google.com/p/address-sanitizer/issues/detail?id=124), and we still depend on CoreFoundation I can't promise that we'll get rid of mach_override before the GCC 4.8 release.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #40 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-15 13:46:32 UTC --- (In reply to comment #39) I agree with Kostya that no major changes to mach_override are necessary because we are really going to dump it. However minor fixes required for ASan in GCC to work on Darwin right now should be perfectly ok. As there currently are issues blocking the dynamic ASan runtime (e.g. https://code.google.com/p/address-sanitizer/issues/detail?id=124), and we still depend on CoreFoundation I can't promise that we'll get rid of mach_override before the GCC 4.8 release. Now that you have committed the patch from comment 29 to upstream compiler-rt... http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121112/155989.html can we at least get missing mach_override/mach_override.h and mach_override/mach_override.c files imported into the asan branch, if not gcc trunk, as well as the approved patch from... http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01119.html so that we can start building libsanitizer on intel darwin? Thanks in advance for any help on these issues.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289
--- Comment #41 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-15
13:51:11 UTC ---
I will also post a small patch to gcc-patches to allow darwin to automatically
pass the required linker flags on the link spec in darwin.h...
ndex: gcc/config/darwin.h
===
--- gcc/config/darwin.h(revision 193503)
+++ gcc/config/darwin.h(working copy)
@@ -180,6 +180,8 @@ extern GTY(()) int darwin_ms_struct;
%{L*} %(link_libgcc) %o
%{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
%{fopenmp|ftree-parallelize-loops=*: \
%{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s;
: -lgomp } } \
+%{faddress-sanitizer: \
+ %{static|static-libgcc|static-libstdc++|static-libgfortran: -framework
CoreFoundation libasan.a%s; : -framework CoreFoundation -lasan } } \
%{fgnu-tm: \
%{static|static-libgcc|static-libstdc++|static-libgfortran: libitm.a%s;
: -litm } } \
%{!nostdlib:%{!nodefaultlibs:\
It works fine for the dynamic linkage although we do seem to have an issue with
the static libasan.a that will require a new PR to be opened...
% gcc-fsf-4.8 -faddress-sanitizer -O1 -fno-omit-frame-pointer -static-libgcc
-g -o use-after-free use-after-free.c
Undefined symbols for architecture x86_64:
___cxa_throw, referenced from:
__asan::InitializeAsanInterceptors() in
libasan.a(asan_interceptors.o)
(maybe you meant: __interception::real___cxa_throw, _wrap___cxa_throw )
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status
However I don't see that as a blocker to getting libsanitizer building on intel
darwin.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #42 from Dominique d'Humieres dominiq at lps dot ens.fr 2012-11-15 15:03:53 UTC --- Jack, Thanks for the patch in comment #37. I had to do some minor surgery to adjust it to revision 193528, but otherwise it worked as expected for both -m32 and -m64 even with gfortran. I think it should go to trunk as an experimental feature (see pr55341).
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #43 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-15 15:12:31 UTC --- Posted updated patch to adjust for bit-rot from the libsanitizer multilib support checkin and add required spec handling to gcc/config/darwin.h. Ignore my previous comment about the static build failing. This was a glitch in my fink packaging where I deleted the libstdc++.la from dependency_libs= in libasan.la. So we have no issues with using libasan.a. http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01251.html
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #44 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-15 17:53:40 UTC --- Posted the final revision of the patch that now properly handles static linkage options with -faddress-sanitizer... http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01285.html For example... % gcc-fsf-4.8 -faddress-sanitizer -O1 -fno-omit-frame-pointer -g -static-libstdc++ -o use-after-free use-after-free.c % otool -L ./use-after-free ./use-after-free: /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 744.12.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0) /sw/lib/gcc4.8/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0) links in libstdc++.a while... % gcc-fsf-4.8 -faddress-sanitizer -O1 -fno-omit-frame-pointer -g -static-libgcc -o use-after-free use-after-free.c % otool -L ./use-after-free ./use-after-free: /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 744.12.0) /sw/lib/gcc4.8/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.17.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0) links libstdc++.dylib. The standard linkage with... % gcc-fsf-4.8 -faddress-sanitizer -O1 -fno-omit-frame-pointer -g -o use-after-free use-after-free.c % otool -L ./use-after-free ./use-after-free: /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 744.12.0) /sw/lib/gcc4.8/lib/libasan.0.dylib (compatibility version 1.0.0, current version 1.0.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0) /sw/lib/gcc4.8/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0) doesn't need to be directly linked against libstdc++ because libasan.0.dylib already is... % otool -L /sw/lib/gcc4.8/lib/libasan.0.dylib /sw/lib/gcc4.8/lib/libasan.0.dylib: /sw/lib/gcc4.8/lib/libasan.0.dylib (compatibility version 1.0.0, current version 1.0.0) /sw/lib/gcc4.8/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.17.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0) /sw/lib/gcc4.8/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0)
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #45 from Iain Sandoe iains at gcc dot gnu.org 2012-11-15 17:58:21 UTC --- (In reply to comment #35) Is that certain to be soon enough Not 100%. I am just warning you. apologies for not much input to this - somewhat tied up with other things. will the new version (did I read somewhere, library interposing?) support the older versions of Darwin/OSX (10.5, 10.6) ? (if not, then there's a place for the existing method).
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #46 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-15 18:28:44 UTC --- (In reply to comment #45) (In reply to comment #35) Is that certain to be soon enough Not 100%. I am just warning you. apologies for not much input to this - somewhat tied up with other things. will the new version (did I read somewhere, library interposing?) support the older versions of Darwin/OSX (10.5, 10.6) ? (if not, then there's a place for the existing method). See... http://code.google.com/p/address-sanitizer/issues/detail?id=64 The interpose example code works fine here under 10.6.8.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #47 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-15 19:09:00 UTC --- (In reply to comment #46) (In reply to comment #45) (In reply to comment #35) Is that certain to be soon enough Not 100%. I am just warning you. apologies for not much input to this - somewhat tied up with other things. will the new version (did I read somewhere, library interposing?) support the older versions of Darwin/OSX (10.5, 10.6) ? (if not, then there's a place for the existing method). See... http://code.google.com/p/address-sanitizer/issues/detail?id=64 The interpose example code works fine here under 10.6.8. The interpose example code also works fine under 10.5.8 on a dual G5.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #48 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-15 19:19:06 UTC --- As proof that the current mach_override.h and mach_override.c from current compiler-rt svn are reasonable to use for gcc 4.8.0, I compiled the complete Polyhedron 2005 benchmark with... gfortran-fsf-4.8 -O1 -g -fno-omit-frame-pointer -faddress-sanitizer %n.f90 -o %n and gfortran-fsf-4.8 -O3 -funroll-loops -ffast-math -g -fno-omit-frame-pointer -faddress-sanitizer %n.f90 -o %n and in both cases each benchmark runs without any error output from mach_override.c.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #21 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14 14:24:43 UTC --- Patch posted at http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01116.html which assumes the libsanitizer maintainers import mach_override/mach_override.h and mach_override/mach_override.c.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #22 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14 14:45:48 UTC --- Revised patch posted at http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01119.html.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #23 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14 15:51:44 UTC --- Created attachment 28683 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28683 debug output from mach_override running use_after_free test case Debugging output from mach_override/mach_override.c using test case built with proposed patch using... gcc-fsf-4.8 -faddress-sanitizer -framework CoreFoundation -O1 -fno-omit-frame-pointer -g -o use-after-free use-after-free.c -lasan
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #24 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14 15:59:55 UTC --- Created attachment 28684 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28684 disassembled use-after-free.o from clang 3.2 Disassembled use-after-free.o generated with... /sw/opt/llvm-3.2/bin/clang -fsanitize=address -O1 -fno-omit-frame-pointer -g use-after-free.c --save-temps objdump -d use-after-free.o use-after-free.clang.disasm
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #25 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14 16:02:03 UTC --- Created attachment 28685 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28685 disassembled use-after-free.o from gcc trunk Disassembled use-after-free.o generated with... gcc-fsf-4.8 -faddress-sanitizer -framework CoreFoundation -O1 -fno-omit-frame-pointer -g -o use-after-free use-after-free.c -lasan --save-temps objdump -d use-after-free.o use-after-free.gcc48.disasm
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #26 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14 16:03:03 UTC --- Created attachment 28686 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28686 diff between disassembled use-after-free.o generated by clang 3.2 and gcc trunk
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289
--- Comment #27 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14
16:06:10 UTC ---
The error in mach_override.c occurs for the use-after-free.c test case at...
Replacing function at 0x1119ef630
First 16 bytes of the function: 48 8d 5 11 4f b 0 53 48 8d 5f e0 48 89 77 90
To disassemble, save the following function as disas.c and run:
gcc -c disas.c gobjdump -d disas.o
The first 16 bytes of the original function will start after four nop
instructions.
void foo() {
asm volatile(nop;nop;nop;nop;);
asm volatile(.byte 0x48, 0x8d, 0x5, 0x11, 0x4f, 0xb, 0x0, 0x53;);
asm volatile(.byte 0x48, 0x8d, 0x5f, 0xe0, 0x48, 0x89, 0x77, 0x90;);
}
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 8d FAIL
Matching: 48 8d FAIL
Matching: 48 8d FAIL
Matching: 48 8d FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 8d FAIL
Matching: 48 8d FAIL
Matching: 48 FAIL
Matching: 48 8d FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 8d FAIL
mach_override: some instructions unknown! Need to update mach_override.c
overridePossible = false @299
err = f801
../../../../gcc-4.8-20121114/libsanitizer/interception/mach_override/mach_override.c:308
err = f801
../../../../gcc-4.8-20121114/libsanitizer/interception/mach_override/mach_override.c:321
err = f801
../../../../gcc-4.8-20121114/libsanitizer/interception/mach_override/mach_override.c:327
err = f801
../../../../gcc-4.8-20121114/libsanitizer/interception/mach_override/mach_override.c:340
err = f801
../../../../gcc-4.8-20121114/libsanitizer/interception/mach_override/mach_override.c:345
First 16 bytes of the function after slicing: 48 8d 5 11 4f b 0 53 48 8d 5f e0
48 89 77 90
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 Alexander Potapenko glider at google dot com changed: What|Removed |Added CC||glider at google dot com --- Comment #28 from Alexander Potapenko glider at google dot com 2012-11-14 16:13:47 UTC --- === t.o: file format mach-o-x86-64 Disassembly of section .text: _foo: 0:55 push %rbp 1:48 89 e5 mov%rsp,%rbp 4:90 nop 5:90 nop 6:90 nop 7:90 nop 8:48 8d 05 11 4f 0b 00 lea0xb4f11(%rip),%rax# b4f20 _foo.eh+0xb4ee8 f:53 push %rbx 10:48 8d 5f e0 lea-0x20(%rdi),%rbx 14:48 89 77 90 mov%rsi,-0x70(%rdi) 18:5d pop%rbp 19:c3 retq === mach_override must be choking on the lea instruction. The easiest way to handle it is to add 48 8d 05 00 00 00 00 to the list of instructions and mark it as lea $imm(%rip),%rax. You can also dive into the opcodes a bit and mask the bits that select the destination register. I'll take a look at mach_override.c code to suggest the actual patch.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289
--- Comment #29 from Alexander Potapenko glider at google dot com 2012-11-14
16:40:53 UTC ---
Index: mach_override.c
===
--- mach_override.c(revision 167724)
+++ mach_override.c(working copy)
@@ -725,6 +725,8 @@
{ 0x2, {0xFF, 0x00}, {0x89, 0x00} }, //
mov r/m32,r32 or r/m16,r16
{ 0x3, {0xFF, 0xFF, 0xFF}, {0x49, 0x89, 0xF8} }, //
mov %rdi,%r8
{ 0x4, {0xFF, 0xFF, 0xFF, 0xFF}, {0x40, 0x0F, 0xBE, 0xCE} }, //
movsbl %sil,%ecx
+{ 0x7, {0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00},
+ {0x48, 0x8D, 0x05, 0x00, 0x00, 0x00, 0x00} }, // lea
$imm(%rip),%rax
{ 0x3, {0xFF, 0xFF, 0xFF}, {0x0F, 0xBE, 0xCE} }, // movsbl, %dh, %ecx
{ 0x3, {0xFF, 0xFF, 0x00}, {0xFF, 0x77, 0x00} }, // pushq $imm(%rdi)
{ 0x2, {0xFF, 0xFF}, {0xDB, 0xE3} }, // fninit
===
Please also make sure the interceptors work in 32-bit programs
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #30 from Jack Howarth howarth at nitro dot med.uc.edu 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+0x10f11) #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+0x10ee5) #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+0x10eda) #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).
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #31 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14 19:10:15 UTC --- Also fine on i386-apple-darwin10... howarth% ./use-after-free = ==82550== ERROR: AddressSanitizer heap-use-after-free on address 0x0207afc5 at pc 0x1f0b bp 0xbfffe3a8 sp 0xbfffe39c READ of size 1 at 0x0207afc5 thread T0 #0 0x1f0a (/Users/howarth/./use-after-free+0x1f0a) #1 0x1ec0 (/Users/howarth/./use-after-free+0x1ec0) #2 0x0 (/Users/howarth/./use-after-free+0x0) 0x0207afc5 is located 5 bytes inside of 40-byte region [0x0207afc0,0x0207afe8) freed by thread T0 here: #0 0x10b34 (/sw_i386/lib/gcc4.8/lib/libasan.0.dylib+0xcb34) #1 0x10cdb (/sw_i386/lib/gcc4.8/lib/libasan.0.dylib+0xccdb) #2 0x1ee6 (/Users/howarth/./use-after-free+0x1ee6) #3 0x1ec0 (/Users/howarth/./use-after-free+0x1ec0) #4 0x0 (/Users/howarth/./use-after-free+0x0) previously allocated by thread T0 here: #0 0x10515 (/sw_i386/lib/gcc4.8/lib/libasan.0.dylib+0xc515) #1 0x99041ba7 (/usr/lib/libSystem.B.dylib+0x4ba7) #2 0x9903fc77 (/usr/lib/libSystem.B.dylib+0x2c77) #3 0x1edc (/Users/howarth/./use-after-free+0x1edc) #4 0x1ec0 (/Users/howarth/./use-after-free+0x1ec0) #5 0x0 (/Users/howarth/./use-after-free+0x0) Shadow byte and word: 0x2040f5f8: fd 0x2040f5f8: fd fd fd fd More shadow bytes: 0x2040f5e8: fa fa fa fa 0x2040f5ec: fa fa fa fa 0x2040f5f0: fa fa fa fa 0x2040f5f4: fa fa fa fa =0x2040f5f8: fd fd fd fd 0x2040f5fc: fd fd fd fd 0x2040f600: fa fa fa fa 0x2040f604: fa fa fa fa 0x2040f608: 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: 7:4095; mallocs by size class: 7:1; frees by size class: 7:1; rfrees by size class: Stats: malloc large: 0 small slow: 1 ==82550== ABORTING Alexander, can you check in libsanitizer/interception/mach_override/mach_override.c (patched as in comment 229) and libsanitizer/interception/mach_override/mach_override.h with the build infrastructure patch from http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01119.html? It would be nice to be able to start testing libsanitizer on intel darwin.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #32 from Konstantin Serebryany konstantin.s.serebryany at gmail dot com 2012-11-14 20:21:19 UTC --- Just want to repeat, that any work on mach_override may end up being wasted time because we plan to get rid of mach_override *really* soon.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #33 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14 20:56:50 UTC --- (In reply to comment #32) Just want to repeat, that any work on mach_override may end up being wasted time because we plan to get rid of mach_override *really* soon. Is that certain to be soon enough to insure that darwin has usable asan support for gcc 4.8? I would rather have the option of continuing to be able to test libsanitizer on darwin than having no support at all.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #34 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14 22:09:37 UTC --- (In reply to comment #32) Just want to repeat, that any work on mach_override may end up being wasted time because we plan to get rid of mach_override *really* soon. One other question. Will the replacement of mach_override also depend on the Core Foundation framework?
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #35 from Konstantin Serebryany konstantin.s.serebryany at gmail dot com 2012-11-14 23:10:00 UTC --- Is that certain to be soon enough Not 100%. I am just warning you. Will the replacement of mach_override also depend on the Core Foundation framework? That's the question to Alex.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #36 from Dominique d'Humieres dominiq at lps dot ens.fr 2012-11-14 23:49:25 UTC --- Jack, Could you please post a patch with the regenerated files. I have lost my struggle with the auto* versions and I am giving up. TIA
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #37 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-15 02:06:45 UTC --- Created attachment 28692 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28692 revised patch with regenerated files and proposed darwin.h link spec change
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #38 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-15 02:10:33 UTC --- (In reply to comment #35) Is that certain to be soon enough Not 100%. I am just warning you. Considering that the release schedule for llvm 3.2 is close to that of gcc 4.8, it seems unrealistic to expect to be able to replace mach_override in time for the gcc 4.8.0 release. If the existing mach_override is sufficient for llvm 3.2, I suspect we can also live with it (at least until gcc 4.8.1). Will the replacement of mach_override also depend on the Core Foundation framework? That's the question to Alex.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #3 from Dominique d'Humieres dominiq at lps dot ens.fr 2012-11-13 13:23:28 UTC --- You can find these files in.. http://llvm.org/svn/llvm-project/compiler-rt/branches/release_32/lib/interception/mach_override/ With this files I have been able to do a clean bootstrap at revision 193472 on x86_64-apple-darwin10. However, first, I have to supply the lib path for libasan when using -faddress-sanitizer: -L/opt/gcc/gcc4.8w/lib -lasan; second, the executable fails to run with: dyld: Symbol not found: _CFStringCreateCopy Referenced from: /opt/gcc/gcc4.8w/lib/libasan.0.dylib Expected in: flat namespace in /opt/gcc/gcc4.8w/lib/libasan.0.dylib Trace/BPT trap Looking at the web, it seems to be a known issue with darwin, but I have been unable to understand how it can be fixed. Indeed I also see pr55291.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #4 from Iain Sandoe iains at gcc dot gnu.org 2012-11-13 13:54:52 UTC --- (In reply to comment #3) You can find these files in.. http://llvm.org/svn/llvm-project/compiler-rt/branches/release_32/lib/interception/mach_override/ With this files I have been able to do a clean bootstrap at revision 193472 on x86_64-apple-darwin10. However, first, I have to supply the lib path for libasan when using -faddress-sanitizer: -L/opt/gcc/gcc4.8w/lib -lasan; second, the executable fails to run with: dyld: Symbol not found: _CFStringCreateCopy this is found in the CoreFoundation framework (CFx is a good hint). what you need is to have -framework CoreFoundation on the link line - and I guess the configury c. needs to arrange this. Looking at the web, it seems to be a known issue with darwin, but I have been unable to understand how it can be fixed. Indeed I also see pr55291.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #5 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 14:06:46 UTC --- (In reply to comment #4) (In reply to comment #3) dyld: Symbol not found: _CFStringCreateCopy this is found in the CoreFoundation framework (CFx is a good hint). what you need is to have -framework CoreFoundation on the link line - and I guess the configury c. needs to arrange this. The bootstrap completes without any other changes. What we need in gcc/config/darwin.h is a LINK_SPEC entry for %faddress-sanitizer which passes -framework CoreFoundation -lasan to the linker.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #6 from Dominique d'Humieres dominiq at lps dot ens.fr 2012-11-13 14:10:36 UTC --- what you need is to have -framework CoreFoundation on the link line - and I guess the configury c. needs to arrange this. When compiled with -faddress-sanitizer -framework CoreFoundation -lasan, the executable fails to run with dyld: lazy symbol binding failed: Symbol not found: ___asan_mach_override_ptr_custom Referenced from: /opt/gcc/gcc4.8w/lib/libasan.0.dylib Expected in: flat namespace dyld: Symbol not found: ___asan_mach_override_ptr_custom Referenced from: /opt/gcc/gcc4.8w/lib/libasan.0.dylib Expected in: flat namespace Trace/BPT trap
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #7 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 14:29:57 UTC --- (In reply to comment #6) what you need is to have -framework CoreFoundation on the link line - and I guess the configury c. needs to arrange this. When compiled with -faddress-sanitizer -framework CoreFoundation -lasan, the executable fails to run with dyld: lazy symbol binding failed: Symbol not found: ___asan_mach_override_ptr_custom Referenced from: /opt/gcc/gcc4.8w/lib/libasan.0.dylib Expected in: flat namespace dyld: Symbol not found: ___asan_mach_override_ptr_custom Referenced from: /opt/gcc/gcc4.8w/lib/libasan.0.dylib Expected in: flat namespace Trace/BPT trap This symbol is contained in mach_override.c which we currently don't build in the Makefiles. Note that llvm's cmake files show mach_override.c is compiled with -std=c99. # Custom flags: projects/compiler-rt/lib/interception/CMakeFiles/RTInterception.osx.dir/mach_override/mach_override.c.o_FLAGS = -std=c99 The interception/mach_override/mach_override.c.o object file will need to be linked into both libasan.dylib and libasan.a.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #8 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 14:39:00 UTC --- Iain, This brings up the sticky situation of having to modify the Makefile.am file in libsanitizer/interception to add mach_override/mach_override.c to the interception_files source list and the Makefile.am file in libsanitizer/asan to link in the resulting interception/mach_override/mach_override.o object code to libasan. Any ideas on how to do this in a target specific manner cleanly?
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #9 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 19:50:20 UTC --- Created attachment 28676 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28676 hack to build asan support
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #10 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 19:52:35 UTC --- The attached patch (with configure and Makefile.in regenerated) allows the asan support to build on x86_64-apple-darwin12. It still isn't functional yet as test cases compiled with... g++-fsf-4.8 -faddress-sanitizer -framework CoreFoundation hello.cc -lasan produce... # ./a.out mach_override: some instructions unknown! Need to update mach_override.c err = f801 ../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:308 err = f801 ../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:321 err = f801 ../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:327 err = f801 ../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:340 err = f801 ../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:345 Hello, world.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289
--- Comment #11 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13
20:13:18 UTC ---
For the simple test case...
int main()
{
int i;
i=5;
}
compiled with 'g++-fsf-4.8 -faddress-sanitizer -O0 -framework CoreFoundation
test.cc -lasan'
using a mach_override.c with...
#define DEBUG_DISASM 1
// #undef DEBUG_DISASM
the errors appear late in the debug output at...
Replacing function at 0x11183d630
First 16 bytes of the function: 48 8d 5 11 4f b 0 53 48 8d 5f e0 48 89 77 90
To disassemble, save the following function as disas.c and run:
gcc -c disas.c gobjdump -d disas.o
The first 16 bytes of the original function will start after four nop
instructions.
void foo() {
asm volatile(nop;nop;nop;nop;);
asm volatile(.byte 0x48, 0x8d, 0x5, 0x11, 0x4f, 0xb, 0x0, 0x53;);
asm volatile(.byte 0x48, 0x8d, 0x5f, 0xe0, 0x48, 0x89, 0x77, 0x90;);
}
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 8d FAIL
Matching: 48 8d FAIL
Matching: 48 8d FAIL
Matching: 48 8d FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 8d FAIL
Matching: 48 8d FAIL
Matching: 48 FAIL
Matching: 48 8d FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 FAIL
Matching: 48 8d FAIL
mach_override: some instructions unknown! Need to update mach_override.c
overridePossible = false @299
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:308
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:321
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:327
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:340
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:345
First 16 bytes of the function after slicing: 48 8d 5 11 4f b 0 53 48 8d 5f e0
48 89 77 90
Replacing function at 0x7fff94c23364
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #12 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 20:21:35 UTC --- The disasembled testcase that is choking on shows... test.o: file format mach-o-x86-64 Disassembly of section .text: _main: 0:55 push %rbp 1:48 89 e5 mov%rsp,%rbp 4:c7 45 fc 05 00 00 00 movl $0x5,-0x4(%rbp) b:b8 00 00 00 00 mov$0x0,%eax 10:5d pop%rbp 11:c3 retq 0012 __GLOBAL__sub_I_00099_0_test.cc: 12:55 push %rbp 13:48 89 e5 mov%rsp,%rbp 16:e8 00 00 00 00 callq 1b __GLOBAL__sub_I_00099_0_test.cc+0x9 1b:5d pop%rbp 1c:c3 retq Disassembly of section __DATA.__mod_init_func: 0020 __DATA.__mod_init_func: ...
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #13 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 20:25:45 UTC --- Also note the comment in mach_override.c... #elif defined(__x86_64__) // TODO(glider): disassembling the 0x48, 0x89 sequences is trickier than it's done below. // If it stops working, refer to http://ref.x86asm.net/geek.html#modrm_byte_32_64 to do it // more accurately. // Note: 0x48 is in fact the REX.W prefix, but it might be wrong to treat it as a separate // instruction. looks like we are bumping into this bug.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289
--- Comment #14 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13
20:50:37 UTC ---
Actually, this appears to be just noise on the output from a functional
libasan. If I use the testcase from
http://code.google.com/p/address-sanitizer/wiki/AddressSanitizer of...
% cat tests/use-after-free.c
#include stdlib.h
int main() {
char *x = (char*)malloc(10 * sizeof(char*));
free(x);
return x[5];
}
I get...
howarth% gcc-fsf-4.8 -faddress-sanitizer -framework CoreFoundation -O1
-fno-omit-frame-pointer -g use-after-free.c -lasan
howarth% ./a.out
mach_override: some instructions unknown! Need to update mach_override.c
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:308
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:321
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:327
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:340
err = f801
../../../../gcc-4.8-20121113/libsanitizer/interception/mach_override/mach_override.c:345
=
==88551== ERROR: AddressSanitizer heap-use-after-free on address 0x000105cbaf45
at pc 0x103001f12 bp 0x7fff5cbfe8f0 sp 0x7fff5cbfe8e8
READ of size 1 at 0x000105cbaf45 thread T0
#0 0x103001f11 (/Users/howarth/./a.out+0x10f11)
#1 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0)
#2 0x0
0x000105cbaf45 is located 5 bytes inside of 80-byte region
[0x000105cbaf40,0x000105cbaf90)
freed by thread T0 here:
#0 0x1030147a4 (/sw/lib/gcc4.8/lib/libasan.0.dylib+0xb7a4)
#1 0x10301492a (/sw/lib/gcc4.8/lib/libasan.0.dylib+0xb92a)
#2 0x103001ee5 (/Users/howarth/./a.out+0x10ee5)
#3 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0)
#4 0x0
previously allocated by thread T0 here:
#0 0x103014255 (/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 0x103001eda (/Users/howarth/./a.out+0x10eda)
#4 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0)
Shadow byte and word:
0x100020b975e8: fd
0x100020b975e8: fd fd fd fd fd fd fd fd
More shadow bytes:
0x100020b975c8: fa fa fa fa fa fa fa fa
0x100020b975d0: fa fa fa fa fa fa fa fa
0x100020b975d8: fa fa fa fa fa fa fa fa
0x100020b975e0: fa fa fa fa fa fa fa fa
=0x100020b975e8: fd fd fd fd fd fd fd fd
0x100020b975f0: fd fd fd fd fd fd fd fd
0x100020b975f8: fa fa fa fa fa fa fa fa
0x100020b97600: fa fa fa fa fa fa fa fa
0x100020b97608: 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
==88551== ABORTING
compared to...
howarth% /sw/opt/llvm-3.2/bin/clang -fsanitize=address -O1
-fno-omit-frame-pointer -g use-after-free.c
howarth% ./a.out
=
==88537== ERROR: AddressSanitizer: heap-use-after-free on address
0x00010a0a2f45 at pc 0x107dcae54 bp 0x7fff57e358f0 sp 0x7fff57e358e8
READ of size 1 at 0x00010a0a2f45 thread T0
#0 0x107dcae53 (/Users/howarth/./a.out+0x10e53)
#1 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0)
#2 0x0
0x00010a0a2f45 is located 5 bytes inside of 80-byte region
[0x00010a0a2f40,0x00010a0a2f90)
freed by thread T0 here:
#0 0x107dd3878 (/Users/howarth/./a.out+0x19878)
#1 0x107dd2ef2 (/Users/howarth/./a.out+0x18ef2)
#2 0x107dcae1a (/Users/howarth/./a.out+0x10e1a)
#3 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0)
#4 0x0
previously allocated by thread T0 here:
#0 0x107dd3682 (/Users/howarth/./a.out+0x19682)
#1 0x7fff94c3b152 (/usr/lib/system/libsystem_c.dylib+0x2d152)
#2 0x7fff94c3bba6 (/usr/lib/system/libsystem_c.dylib+0x2dba6)
#3 0x107dcae0f (/Users/howarth/./a.out+0x10e0f)
#4 0x7fff8bd827e0 (/usr/lib/system/libdyld.dylib+0x27e0)
Shadow byte and word:
0x1000214145e8: fd
0x1000214145e8: fd fd fd fd fd fd fd fd
More shadow bytes:
0x1000214145c8: fa fa fa fa fa fa fa fa
0x1000214145d0: fa fa fa fa fa fa fa fa
0x1000214145d8: fa fa fa fa fa fa fa fa
0x1000214145e0: fa fa fa fa fa fa fa fa
=0x1000214145e8: fd fd fd fd fd fd fd fd
0x1000214145f0: fd fd fd fd fd fd fd fd
0x1000214145f8: fa fa fa fa fa fa fa fa
0x100021414600: fa fa fa fa fa fa fa fa
0x100021414608: fa fa fa fa fa fa fa fa
Stats: 0M malloced (0M for red zones) by 1
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 Konstantin Serebryany konstantin.s.serebryany at gmail dot com changed: What|Removed |Added CC||konstantin.s.serebryany at ||gmail dot com --- Comment #15 from Konstantin Serebryany konstantin.s.serebryany at gmail dot com 2012-11-13 21:27:08 UTC --- Please not that upstream asan is in the process of getting rid of mach_override in favor of Mac's function interposition.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 Jack Howarth howarth at nitro dot med.uc.edu changed: What|Removed |Added Attachment #28676|0 |1 is obsolete|| --- Comment #16 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 21:55:22 UTC --- Created attachment 28677 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28677 prototype patch for adding darwin asan support
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #17 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 22:14:10 UTC --- (In reply to comment #16) Created attachment 28677 [details] prototype patch for adding darwin asan support Note that you need to run... autoconf -I. -I./config cd libsanitizer autoreconf -I. -I../config automake-1.11 after applying the prototype patch.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #18 from Dominique d'Humieres dominiq at lps dot ens.fr 2012-11-13 23:21:35 UTC --- prototype patch for adding darwin asan support Already updated;-( - x86_64-*-linux-* | i?86-*-linux-*) + x86_64-*-linux-* | i?86-*-linux-* | *-*-darwin*) should now go to libsanitizer/configure.tgt and not to configure.ac.
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 Jack Howarth howarth at nitro dot med.uc.edu changed: What|Removed |Added Attachment #28677|0 |1 is obsolete|| --- Comment #19 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14 01:28:44 UTC --- Created attachment 28680 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28680 revised prototype patch for adding darwin asan support
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #20 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-14 01:30:13 UTC --- Revised patch builds at r193494 after... cd libsanitizer autoconf -I. -I../config automake-1.11
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 Jack Howarth howarth at nitro dot med.uc.edu changed: What|Removed |Added Target||*-*-darwin* Host||*-*-darwin* Build||*-*-darwin* Severity|normal |critical
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 Dominique d'Humieres dominiq at lps dot ens.fr changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2012-11-12 Ever Confirmed|0 |1 --- Comment #1 from Dominique d'Humieres dominiq at lps dot ens.fr 2012-11-12 20:53:31 UTC --- Manually adding the libsanitizer/interception/mach_override directory from the llvm compiler-rt 3.2 branch restores the bootstrap on x86_64-apple-darwin12. How do I get the libsanitizer/interception/mach_override directory on Xcode 3.2.6?
[Bug bootstrap/55289] darwin bootstrap fails due to missing libsanitizer/interception/mach_override directory and files
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289 --- Comment #2 from Jack Howarth howarth at nitro dot med.uc.edu 2012-11-13 00:46:54 UTC --- (In reply to comment #1) Manually adding the libsanitizer/interception/mach_override directory from the llvm compiler-rt 3.2 branch restores the bootstrap on x86_64-apple-darwin12. How do I get the libsanitizer/interception/mach_override directory on Xcode 3.2.6? This has nothing to do with Xcode. When the libsanitizer directories were ported over from the llvm asan sources, an essential darwin-specific interception/mach_override subdirectory was omitted. You can find these files in.. http://llvm.org/svn/llvm-project/compiler-rt/branches/release_32/lib/interception/mach_override/
