[libfuzzer] Add custom max_len parameter for boringssl fuzzers.

third_party/boringssl/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build_overrides/build.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("BUILD.generated.gni")
 import("BUILD.generated_tests.gni")
@@ skipping 160 matching lines @@
 
   foreach(fuzzer, fuzzers) {
     fuzzer_test("boringssl_${fuzzer}_fuzzer") {
       sources = [
         "src/fuzz/${fuzzer}.cc",
       ]
       deps = [
         ":boringssl_fuzzer",
       ]
       seed_corpus = "src/fuzz/${fuzzer}_corpus"
+
+      if ("cert" == fuzzer) {
+        libfuzzer_options = [ "max_len=3072" ]
+      } else if ("client" == fuzzer) {
+        libfuzzer_options = [ "max_len=20000" ]
+      } else if ("privkey" == fuzzer) {
+        libfuzzer_options = [ "max_len=2048" ]
+      } else if ("server" == fuzzer) {
+        libfuzzer_options = [ "max_len=4096" ]

[davidben, 2016/04/27 18:06:22]

Oof. Sorry, I completely forgot this was in the pipeline when I made this a
foreach. In a follow-up, I'll see about making these definitions live in the
BoringSSL repository somewhere.

+      }
     }
   }
 }