Re: Connected sanitizer libraries to the build (for x86)

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On 01/13/15 12:28, Dimitry Andric wrote:
> Hi,
> 
> In r277146, I have connected the sanitizer libraries from
> compiler-rt to the build.  Currently, this works for i386 and
> amd64, and contains Address Sanitizer (ASan) and Undefined Behavior
> Sanitizer.
> 
> AddressSanitizer is a fast memory error detector [1].  It consists
> of a compiler instrumentation module and a run-time library. The
> tool 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)
> 
> The typical slowdown introduced by AddressSanitizer is 2x.  Enable
> it by compiling and linking with clang, and using the
> -fsanitize=address flag.
> 
> Undefined Behavior Sanitizer is a fast and compatible undefined
> behavior checker, which enables a number of checks that have small
> runtime cost and no impact on address space layout or ABI.  Enable
> it by using the -fsanitize=undefined flag. [2]
> 
> Please note that the sanitizers still have some rough edges on
> FreeBSD, particularly on i386.  These will hopefully be smoothed
> out in the coming time.  Reports of problems (and fixes :) are very
> welcome, but please log them in Bugzilla, so they can be tracked.
> 
> -Dimitry
> 
> [1]
> http://llvm.org/releases/3.5.0/tools/clang/docs/AddressSanitizer.html
>
> 
[2]
http://llvm.org/releases/3.5.0/tools/clang/docs/UsersManual.html#opt-fsanitize-undefined
> 


Do you want a test run for arm?

sean
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