Updates documentation for a syntax sugar libfuzzer flag,

as implemented in https://reviews.llvm.org/D32193

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301217 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/LibFuzzer.rst b/docs/LibFuzzer.rst
index c30eba8df9684d8937f820084db6a7053ac4d311..a11baa720ec8df2dff0c538082946a8a0f38c092 100644 (file)
--- a/docs/LibFuzzer.rst
+++ b/docs/LibFuzzer.rst
@@ -87,10 +87,16 @@ Some important things to remember about fuzz targets:
 * Usually, the narrower the target the better. E.g. if your target can parse several data formats, split it into several targets, one per format.
 
 
-Building
---------
+Fuzzer Usage
+------------
+
+Very recent versions of Clang (> April 20 2017) include libFuzzer,
+and no installation is necessary.
+In order to fuzz your binary, use the `-fsanitize=fuzzer` flag during the compilation::
+
+   clang -fsanitize=fuzzer,address mytarget.c
 
-Next, build the libFuzzer library as a static archive, without any sanitizer
+Otherwise, build the libFuzzer library as a static archive, without any sanitizer
 options. Note that the libFuzzer library contains the ``main()`` function:
 
 .. code-block:: console