[qemu-xen staging] docs/fuzz: describe building fuzzers with enable-sanitizers

[patchbot@xxxxxxx]

commit ee16da12d7035bffb1c990c794de8fb1a96815d7
Author:     Alexander Bulekov <alxndr@xxxxxx>
AuthorDate: Mon Jul 6 15:55:32 2020 -0400
Commit:     Thomas Huth <thuth@xxxxxxxxxx>
CommitDate: Tue Jul 21 07:27:28 2020 +0200

    docs/fuzz: describe building fuzzers with enable-sanitizers
    
    Signed-off-by: Alexander Bulekov <alxndr@xxxxxx>
    Message-Id: <20200706195534.14962-3-alxndr@xxxxxx>
    Reviewed-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
    Reviewed-by: Thomas Huth <thuth@xxxxxxxxxx>
    Signed-off-by: Thomas Huth <thuth@xxxxxxxxxx>
---
 docs/devel/fuzzing.txt | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/docs/devel/fuzzing.txt b/docs/devel/fuzzing.txt
index db5641de74..12bf6aa0ca 100644
--- a/docs/devel/fuzzing.txt
+++ b/docs/devel/fuzzing.txt
@@ -23,9 +23,12 @@ AddressSanitizer mmaps ~20TB of memory, as part of its 
detection. This results
 in a large page-map, and a much slower fork().
 
 To build the fuzzers, install a recent version of clang:
-Configure with (substitute the clang binaries with the version you installed):
+Configure with (substitute the clang binaries with the version you installed).
+Here, enable-sanitizers, is optional but it allows us to reliably detect bugs
+such as out-of-bounds accesses, use-after-frees, double-frees etc.
 
-    CC=clang-8 CXX=clang++-8 /path/to/configure --enable-fuzzing
+    CC=clang-8 CXX=clang++-8 /path/to/configure --enable-fuzzing \
+                                                --enable-sanitizers
 
 Fuzz targets are built similarly to system/softmmu:
 
--
generated by git-patchbot for /home/xen/git/qemu-xen.git#staging