feat(afl): print timeouts properly

Author: oetr

packages/fuzzer/libafl_runtime.cpp

@@ -346,6 +346,10 @@ std::string DescribeJsError(Napi::Env env, const Napi::Value &error) {
   return CollapseWhitespace(summary);
 }
 
+std::string DescribeTimeout(uint64_t timeout_millis) {
+  return "timeout after " + std::to_string(timeout_millis) + " ms";
+}
+
 void RecordFindingInfo(const std::string &artifact,
                        const std::string &summary) {
   gFindingInfo.has_value = 1;
@@ -449,7 +453,9 @@ std::string WriteArtifact(const std::string &artifact_prefix,
                                 const std::vector<uint8_t> &input) {
   std::cerr << "ERROR: Exceeded timeout of " << timeout_millis
             << " ms for one fuzz target execution." << std::endl;
-  WriteArtifact(artifact_prefix, "timeout", input.data(), input.size());
+  const auto artifact =
+      WriteArtifact(artifact_prefix, "timeout", input.data(), input.size());
+  RecordFindingInfo(artifact, DescribeTimeout(timeout_millis));
   _Exit(libfuzzer::EXIT_ERROR_TIMEOUT);
 }