[fuzzer] properly annotate fallthrough, add one more entry to FAQ

[oota-llvm.git] / lib / Fuzzer / README.txt

diff --git a/lib/Fuzzer/README.txt b/lib/Fuzzer/README.txt
index 1e1acbbe1dd9727666104c7ecf0ea6db62ffefcf..e4d6b4f207952e7fc926d37edc52dbf1044cd51e 100644 (file)
--- a/lib/Fuzzer/README.txt
+++ b/lib/Fuzzer/README.txt
@@ -104,3 +104,9 @@ A.
     more) the speed benefit from the in-process fuzzer is negligible.
   * If the target library runs persistent threads (that outlive
     execution of one test) the fuzzing results will be unreliable.
+
+Q. So, what exactly this Fuzzer is good for?
+A. This Fuzzer might be a good choice for testing libraries that have relatively
+small inputs, each input takes < 1ms to run, and the library code is not expected
+to crash on invalid inputs.
+Examples: regular expression matchers, text or binary format parsers.