[llvm] r337476 - [libFuzzer] Update documentation regarding MSan.

[Matt Morehouse via llvm-commits]

Author: morehouse
Date: Thu Jul 19 10:59:11 2018
New Revision: 337476

URL: http://llvm.org/viewvc/llvm-project?rev=337476&view=rev
Log:
[libFuzzer] Update documentation regarding MSan.

Summary: -fsanitize=fuzzer,memory now works out-of-the-box.

Reviewers: kcc

Reviewed By: kcc

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D49441

Modified:
    llvm/trunk/docs/LibFuzzer.rst

Modified: llvm/trunk/docs/LibFuzzer.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/LibFuzzer.rst?rev=337476&r1=337475&r2=337476&view=diff
==============================================================================
--- llvm/trunk/docs/LibFuzzer.rst (original)
+++ llvm/trunk/docs/LibFuzzer.rst Thu Jul 19 10:59:11 2018
@@ -75,11 +75,13 @@ Recent versions of Clang (starting from
 
 In order to build your fuzzer binary, use the `-fsanitize=fuzzer` flag during the
 compilation and linking. In most cases you may want to combine libFuzzer with
-AddressSanitizer_ (ASAN), UndefinedBehaviorSanitizer_ (UBSAN), or both::
+AddressSanitizer_ (ASAN), UndefinedBehaviorSanitizer_ (UBSAN), or both.  You can
+also build with MemorySanitizer_ (MSAN), but support is experimental::
 
    clang -g -O1 -fsanitize=fuzzer                         mytarget.c # Builds the fuzz target w/o sanitizers
    clang -g -O1 -fsanitize=fuzzer,address                 mytarget.c # Builds the fuzz target with ASAN
    clang -g -O1 -fsanitize=fuzzer,signed-integer-overflow mytarget.c # Builds the fuzz target with a part of UBSAN
+   clang -g -O1 -fsanitize=fuzzer,memory                  mytarget.c # Builds the fuzz target with MSAN
 
 This will perform the necessary instrumentation, as well as linking with the libFuzzer library.
 Note that ``-fsanitize=fuzzer`` links in the libFuzzer's ``main()`` symbol.
@@ -93,10 +95,6 @@ instrumentation without linking::
 Then libFuzzer can be linked to the desired driver by passing in
 ``-fsanitize=fuzzer`` during the linking stage.
 
-Using MemorySanitizer_ (MSAN) with libFuzzer is possible too, but tricky.
-The exact details are out of scope, we expect to simplify this in future
-versions.
-
 .. _libfuzzer-corpus:
 
 Corpus