[base] Define CHECK comparison for signed vs. unsigned

src/wasm/wasm-module.h

 // 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.
 
 #ifndef V8_WASM_MODULE_H_
 #define V8_WASM_MODULE_H_
 
 #include <memory>
 
 #include "src/api.h"
@@ skipping 212 matching lines @@
   WasmModule() : WasmModule(nullptr, nullptr) {}
   WasmModule(Zone* owned_zone, const byte* module_start);
   ~WasmModule() {
     if (owned_zone) delete owned_zone;
   }
 
   // Get a string stored in the module bytes representing a name.
   WasmName GetName(uint32_t offset, uint32_t length) const {
     if (length == 0) return {"<?>", 3};  // no name.
     CHECK(BoundsCheck(offset, offset + length));
-    DCHECK_GE(static_cast<int>(length), 0);
+    DCHECK_GE(length, 0);
     return {reinterpret_cast<const char*>(module_start + offset),
             static_cast<int>(length)};
   }
 
   // Get a string stored in the module bytes representing a function name.
   WasmName GetName(WasmFunction* function) const {
     return GetName(function->name_offset, function->name_length);
   }
 
   // Get a string stored in the module bytes representing a name.
   WasmName GetNameOrNull(uint32_t offset, uint32_t length) const {
     if (offset == 0 && length == 0) return {NULL, 0};  // no name.
     CHECK(BoundsCheck(offset, offset + length));
-    DCHECK_GE(static_cast<int>(length), 0);
+    DCHECK_GE(length, 0);
     return {reinterpret_cast<const char*>(module_start + offset),
             static_cast<int>(length)};
   }
 
   // Get a string stored in the module bytes representing a function name.
   WasmName GetNameOrNull(const WasmFunction* function) const {
     return GetNameOrNull(function->name_offset, function->name_length);
   }
 
   // Checks the given offset range is contained within the module bytes.
@@ skipping 183 matching lines @@
 void ValidateModuleState(Isolate* isolate, Handle<WasmModuleObject> module_obj);
 void ValidateOrphanedInstance(Isolate* isolate,
                               Handle<WasmInstanceObject> instance);
 
 }  // namespace testing
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_WASM_MODULE_H_