Ignore result from fwrite

src/wasm/module-decoder.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/wasm/module-decoder.h"
 #include "src/wasm/function-body-decoder-impl.h"
 
 #include "src/base/functional.h"
 #include "src/base/platform/platform.h"
 #include "src/counters.h"
@@ skipping 227 matching lines @@
     // File are named `HASH.{ok,failed}.wasm`.
     size_t hash = base::hash_range(start_, end_);
     char buf[32] = {'\0'};
 #if V8_OS_WIN && _MSC_VER < 1900
 #define snprintf sprintf_s
 #endif
     snprintf(buf, sizeof(buf) - 1, "%016zx.%s.wasm", hash,
              result.ok() ? "ok" : "failed");
     std::string name(buf);
     if (FILE* wasm_file = base::OS::FOpen((path + name).c_str(), "wb")) {
-      fwrite(start_, end_ - start_, 1, wasm_file);
+      if (fwrite(start_, end_ - start_, 1, wasm_file) != 1) {
+        OFStream os(stderr);
+        os << "Error while dumping wasm file" << std::endl;
+      }
       fclose(wasm_file);
     }
   }
 
   // Decodes an entire module.
   ModuleResult DecodeModule(bool verify_functions = true) {
     pc_ = start_;
     WasmModule* module = new WasmModule(module_zone);
     module->min_mem_pages = 0;
     module->max_mem_pages = 0;
@@ skipping 1041 matching lines @@
     result.push_back({section_start, name_offset, name_length, payload_offset,
                       payload_length, section_length});
   }
 
   return result;
 }
 
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8