llvm-svn: 373528

See https://reviews.llvm.org/D58620 for discussion, and for the commands
I ran. In addition I also ran

  for f in $(svn diff | diffstat | grep .cc | cut -f 2 -d ' '); do rg $f . ; done

and manually updated (many) references to renamed files found by that.

llvm-svn: 367463

Summary:
This patch contains various fixes for the unwinding and backtrace machinery on the SPARC, which doesn't work correctly in various cases.  It was tested with GCC on SPARC/Solaris and SPARC/Linux.

Patch by Eric Botcazou.

Reviewers: #sanitizers, vitalybuka

Reviewed By: #sanitizers, vitalybuka

Subscribers: jrtc27, delcypher, vitalybuka, ro, jyknight, kubamracek, fedor.sergeev, jdoerfert, llvm-commits, #sanitizers

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D58431

llvm-svn: 355965

Reviewers: vitalybuka

Differential Revision: https://reviews.llvm.org/D58555

llvm-svn: 354717

FastUnwindStack -> UnwindFast
SlowUnwindStack -> UnwindSlow
Stack is redundant, verb should come first.

SlowUnwindStackWithContext(uptr pc, void *context, u32 max_depth) ->
SlowUnwindStack
WithContext is redundant, since it is a required parameter.

Reviewers: vitalybuka

Differential Revision: https://reviews.llvm.org/D58551

llvm-svn: 354696

to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636

This is needed for NetBSD to match the expected type in
Unwind_GetIP().

llvm-svn: 345620

llvm-svn: 331618

Summary:
This is the first mostly working version of the Sanitizer port to 32-bit Solaris/x86.
It is currently based on Solaris 11.4 Beta.

This part was initially developed inside libsanitizer in the GCC tree and should apply to
both.  Subsequent parts will address changes to clang, the compiler-rt build system
and testsuite.

I'm not yet sure what the right patch granularity is: if it's profitable to split the patch
up, I'd like to get guidance on how to do so.

Most of the changes are probably straightforward with a few exceptions:

* The Solaris syscall interface isn't stable, undocumented and can change within an
  OS release.  The stable interface is the libc interface, which I'm using here, if possible
  using the internal _-prefixed names.

* While the patch primarily target 32-bit x86, I've left a few sparc changes in.  They
  cannot currently be used with clang due to a backend limitation, but have worked
  fine inside the gcc tree.

* Some functions (e.g. largefile versions of functions like open64) only exist in 32-bit
  Solaris, so I've introduced a separate SANITIZER_SOLARIS32 to check for that.

The patch (with the subsequent ones to be submitted shortly) was tested
on i386-pc-solaris2.11.  Only a few failures remain, some of them analyzed, some
still TBD:

    AddressSanitizer-i386-sunos :: TestCases/Posix/concurrent_overflow.cc
    AddressSanitizer-i386-sunos :: TestCases/init-order-atexit.cc
    AddressSanitizer-i386-sunos :: TestCases/log-path_test.cc
    AddressSanitizer-i386-sunos :: TestCases/malloc-no-intercept.c
    AddressSanitizer-i386-sunos-dynamic :: TestCases/Posix/concurrent_overflow.cc
    AddressSanitizer-i386-sunos-dynamic :: TestCases/Posix/start-deactivated.cc
    AddressSanitizer-i386-sunos-dynamic :: TestCases/default_options.cc
    AddressSanitizer-i386-sunos-dynamic :: TestCases/init-order-atexit.cc
    AddressSanitizer-i386-sunos-dynamic :: TestCases/log-path_test.cc
    AddressSanitizer-i386-sunos-dynamic :: TestCases/malloc-no-intercept.c

   SanitizerCommon-Unit :: ./Sanitizer-i386-Test/MemoryMappingLayout.DumpListOfModules
    SanitizerCommon-Unit :: ./Sanitizer-i386-Test/SanitizerCommon.PthreadDestructorIterations

Maybe this is good enough the get the ball rolling.

Reviewers: kcc, alekseyshl

Reviewed By: alekseyshl

Subscribers: srhines, jyknight, kubamracek, krytarowski, fedor.sergeev, llvm-commits, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D40898

llvm-svn: 320740

Summary:
NetBSD is a POSIX-like and BSD-family system.

Reuse FreeBSD and Linux code.

NetBSD uses DWARF ExceptionHandler.

Part of the code inspired by the original work on libsanitizer in GCC 5.4 by Christos Zoulas.

Sponsored by <The NetBSD Foundation>

Reviewers: joerg, kcc, filcab, vitalybuka

Reviewed By: vitalybuka

Subscribers: srhines, emaste, llvm-commits, kubamracek, aprantl, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D36314

llvm-svn: 310179

Adding a comment to explain r273886 ("Stop unwinding the stack when a close-to-zero PC is found"). NFC.

llvm-svn: 274010

On OS X, we often get stack trace in a report that ends with a 0x0 frame.  To get rid of it, let's trim the stack trace when we find a close-to-zero value, which is obviously not a valid PC.

Differential Revision: http://reviews.llvm.org/D14656

llvm-svn: 273886

ASan runtime library used libcorkscrew from Android platform for
stack unwinding. Since Android L, this is both unnecessary (the
libgcc unwinder has been fixed) and impossible (the library is not
there any more). Don't even try.

This should have not effect on modern Android devices other than
removing a message about failing to open the library with
ASAN_OPTIONS=verbosity=1.

llvm-svn: 269233

Summary: _Unwind_Backtrace is not available on iOS, so we should ifdef out the posix implementations of BufferedStackTrace::SlowUnwindStack and BufferedStackTrace::SlowUnwindStackWithContext on iOS.

Reviewers: samsonov

Reviewed By: samsonov

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10696

llvm-svn: 240586

Summary:
This is one of many changes needed for compiler-rt to get it building on iOS.

Darwin doesn't have _Unwind_VRS_Get, instead use _Unwind_GetIP directly.

Note: this change does not enable building for iOS, as there are more changes to come.

Reviewers: kubabrecka, bogner, samsonov

Reviewed By: samsonov

Subscribers: samsonov, llvm-commits

Differential Revision: http://reviews.llvm.org/D10516

llvm-svn: 240470

By attaching an extra integer tag to heap origins, we are able
to distinguish between uninits
 - created by heap allocation,
 - created by heap deallocation (i.e. use-after-free),
 - created by __msan_allocated_memory call,
 - etc.

See https://code.google.com/p/memory-sanitizer/issues/detail?id=35.

llvm-svn: 226821

This better explains a change in r221520.

llvm-svn: 222000

It can only make it worse.

llvm-svn: 221520

introduce a BufferedStackTrace class, which owns this array.

Summary:
This change splits __sanitizer::StackTrace class into a lightweight
__sanitizer::StackTrace, which doesn't own array of PCs, and BufferedStackTrace,
which owns it. This would allow us to simplify the interface of StackDepot,
and eventually merge __sanitizer::StackTrace with __tsan::StackTrace.

Test Plan: regression test suite.

Reviewers: kcc, dvyukov

Reviewed By: dvyukov

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D5985

llvm-svn: 220635

Guard the source with #if SANITIZER_POSIX to fix compilation on Windows.
use it only in 

llvm-svn: 216882

This allows the slow unwinder to be used on OSX (it's disabled for now, see
https://code.google.com/p/address-sanitizer/issues/detail?id=137 for details)

llvm-svn: 216877