[wasm] Add hash to the crash message of the correctness fuzzer.

test/fuzzer/wasm-code.cc

Index: test/fuzzer/wasm-code.cc
diff --git a/test/fuzzer/wasm-code.cc b/test/fuzzer/wasm-code.cc
index feb3e24618f8975cafa7d1ce5bbf7a0971cb28e8..130c8a88f1c870280d0504c42294c70096bd8c81 100644
--- a/test/fuzzer/wasm-code.cc
+++ b/test/fuzzer/wasm-code.cc
@@ -7,6 +7,7 @@
 
 #include "include/v8.h"
 #include "src/isolate.h"
+#include "src/objects.h"
 #include "src/wasm/encoder.h"
 #include "src/wasm/wasm-interpreter.h"
 #include "src/wasm/wasm-module.h"
@@ -92,6 +93,14 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
     CHECK(i_isolate->has_pending_exception());
     i_isolate->clear_pending_exception();
   } else {
+    if (result_interpreted != result_compiled) {
+      V8_Fatal(
+          __FILE__, __LINE__,
+          "Interpreter result (%d) != compiled module result (%d). Hash: %u",
+          result_interpreted, result_compiled,
+          v8::internal::StringHasher::HashSequentialString(
+              data, static_cast<int>(size), 83));

[titzer, 2016/09/22 09:54:17]

what is 83? the seed? Maybe add a constant here.

+    }
     CHECK_EQ(result_interpreted, result_compiled);
   }
   return 0;