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5 Commits

Author SHA1 Message Date
dim
64036a7c35 Update compiler-rt to trunk r228651. This enables using Address 
Sanitizer and Undefined Behavior Sanitizer with clang 3.6.0.
 2015-02-22 22:31:36 +00:00
dim
2defe6edea Update llvm and clang library and binary Makefiles for 3.6.0 rc1. 2015-01-26 18:48:27 +00:00
dim
c074a2b0d0 Upgrade our copy of clang and llvm to 3.5.1 release. This is a bugfix 
only release, no new features have been added.

Please note that this version requires C++11 support to build; see
UPDATING for more information.

Release notes for llvm and clang can be found here:
<http://llvm.org/releases/3.5.1/docs/ReleaseNotes.html>
<http://llvm.org/releases/3.5.1/tools/clang/docs/ReleaseNotes.html>

MFC after:	1 month
X-MFC-With:	276479
 2015-01-18 14:14:47 +00:00
dim
d07708df70 Connect libclang_rt to the build, for specific architectures. This 
contains the libraries for Address Sanitizer (asan), Undefined Behavior
Sanitizer (ubsan) and Profile Guided Optimization.

ASan is a fast memory error detector. It can detect the following types
of bugs:

    Out-of-bounds accesses to heap, stack and globals
    Use-after-free
    Use-after-return (to some extent)
    Double-free, invalid free
    Memory leaks (experimental)

Typical slowdown introduced by AddressSanitizer is 2x.

UBSan is a fast and compatible undefined behavior checker. It enables a
number of undefined behavior checks that have small runtime cost and no
impact on address space layout or ABI.

PLEASE NOTE: the sanitizers still have some rough edges on FreeBSD,
particularly on i386.  These will hopefully be smoothed out in the
coming time.

Differential Revision: https://reviews.freebsd.org/D1505
 2015-01-13 19:54:47 +00:00
dim
cfd5b20c8b Now compiler-rt has been updated in r276851, bring in the various 
sanitizer libraries that already work on FreeBSD:

* asan:    Address Sanitizer
* ubsan:   Undefined Behavior Sanitizer
* profile: Profile Guided Optimization support

Please note that these libraries are *experimental* at this stage, so
the main Makefile is not yet connected to the build.

Since I didn't want to needlessly edit BSD.usr.dist, you will also have
to create the install directory /usr/lib/clang/3.5.0/lib/freebsd
manually for now.
 2015-01-08 22:40:56 +00:00