[gcc] Fix build with GCC

Change-Id: I172f684515e363fc29e299c70fa3d6eac2789818
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735127
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Milad Farazmand <mfarazma@redhat.com>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#81450}

src/bigint/tostring.cc

@@ -600,7 +600,8 @@ int ToStringResultLength(Digits X, int radix, bool sign) {
     uint64_t chars_required = bit_length;
     chars_required *= kBitsPerCharTableMultiplier;
     chars_required = DIV_CEIL(chars_required, min_bits_per_char);
-    DCHECK(chars_required < std::numeric_limits<int>::max());
+    DCHECK(chars_required <
+           static_cast<uint64_t>(std::numeric_limits<int>::max()));
     result = static_cast<int>(chars_required);
   }
   result += sign;

src/wasm/names-provider.h

@@ -86,7 +86,7 @@ class NamesProvider {
   bool has_computed_import_names_{false};
   const WasmModule* module_;
   base::Vector<const uint8_t> wire_bytes_;
-  std::unique_ptr<DecodedNameSection> name_section_names_{};
+  std::unique_ptr<DecodedNameSection> name_section_names_;
   std::map<uint32_t, std::string> import_export_function_names_;
   std::map<uint32_t, std::string> import_export_table_names_;
   std::map<uint32_t, std::string> import_export_memory_names_;